FCC ID: 2ATX6SS-IE073V Bluetooth Wireless Earphone

Room 8C70, 8th Floor, Block A, 8th Floor, Commercial Building, Xinghua Building, 2018 Shennan Zhong Road, Fuqiang Community, Huaqiang North Street, Futian District, Shenzhen Jiefeng Trading(Shenzhen)Co., Ltd. July 10, 2019 Federal Communication Commission Authorization and Evaluation Division FCC ID: 2ATX6SS-IE073V Re: Confidentiality Request Pursuant to Sections 0.457 and 0.459 of the Commissions Rules, the applicant hereby requests confidential treatment of information applied this application as outlined below:

1: Block Diagram 2: Schematics 3: Operational Description The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant to Rules 0.457, disclosure of this Application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Jiefeng Trading(Shenzhen)Co., Ltd. Contact person: Raymond Zheng

External Photos TOP VIEW OF EUT BOTTOM VIEW OF EUT FRONT VIEW OF EUT BACK VIEW OF EUT LEFT VIEW OF EUT RIGHT VIEW OF EUT VIEW OF EUT(PORT)

Internal Photos OPEN VIEW OF EUT VIEW OF BATTERY INTERNAL VIEW OF EUT-1 Antenna INTERNAL VIEW OF EUT-2

FCC ID Label Location 30mm*5mm FCC ID: 2ATX6SS-IE073V

Jiefeng Trading(Shenzhen)Co., Ltd. Room 8C70, 8th Floor, Block A, 8th Floor, Commercial Building, Xinghua Building, 2018 Shennan Zhong Road, Fuqiang Community, Huaqiang North Street, Futian District, Shenzhen Limited Agency Agreement Jiefeng Trading(Shenzhen)Co., Ltd. FCC ID: 2ATX6SS-IE073V

[2019-08-06]

Federal Communications Commission 445 12th Street SW Washington, DC 20554 Subject:

To Whom It May Concern:

We, Jiefeng Trading(Shenzhen)Co., Ltd. hereby authorized Intertek Testing Services to act as our Agent for the purpose of preparing application for FCC ID number (2ATX6SS-IE073V) under all applicable parts of the FCC rules and regulations. The effective date of this limited agency agreement is (2019-08-06). The Limited Agency Agreement expires until further notice, unless sooner terminated or extended by written notice to Intertek Testing Services and the Federal Communications Commission. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. The applicant is not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 U.S.C. 862, and no party to the application is subject to a denial of federal benefits pursuant to that section. If you have any questions or comments, please do not hesitate to contact me. Sincerely,

[Signature]

Jiefeng Trading(Shenzhen)Co., Ltd. Contact person: Raymond Zheng

RF EXPOSURE EVALUATION 1. PRODUCT INFORMATION Product Description Bluetooth Wireless Earphone Model Name SS-IE073V, NTUNE 300, 1672020 FCC ID 2ATX6SS-IE073V 2. EVALUATION METHOD According to 447498 D01 General RF Exposure Guidance v05 The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances 50 mm are determined by:

[(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] [f(GHz)] 3.0 for 1-g SAR and 7.5 for 10-g extremity SAR. Where f(GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation 3. CALCULATION Pt=0.429dBm=1.10mW The value of the Maximum output power Pt is referred to the test report of the CFR47 15.247. The result for RF exposure evaluation SAR=(1.10mW /5mm) .[2.441(GHz)]= 0.34<3.0 for 1-g SAR and 7.5 for 10-g extremity SAR. 4. CONCLUSION The SAR evaluation is not required.

Page 1 of 68 FCC Test Report Report No.: AGC02457190605FE03 FCC ID

: 2ATX6SS-IE073V APPLICATION PURPOSE

: Original Equipment PRODUCT DESIGNATION

: Bluetooth Wireless Earphone BRAND NAME

: N/A MODEL NAME

: SS-IE073V, NTUNE 300, 1672020 CLIENT

:

Jiefeng Trading(Shenzhen)Co., Ltd. DATE OF ISSUE

:

Jun. 24, 2019 STANDARD(S)

: FCC Part 15.247 REPORT VERSION

: V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd CAUTION:

This report shall not be reproduced except in full without the written permission of the test laboratory and shall not be quoted out of context. Report No.: AGC02457190605FE03 Page 2 of 68 REPORT REVISE RECORD Report Version Revise Time Issued Date Valid Version Notes V1.0

/

Jun. 24, 2019 Valid Initial Release Report No.: AGC02457190605FE03 Page 3 of 68 TABLE OF CONTENTS 1. VERIFICATION OF CONFORMITY ............................................................................................................... 5 2. GENERAL INFORMATION ............................................................................................................................ 6 2.1. PRODUCT DESCRIPTION ..................................................................................................................... 6 2.2. TABLE OF CARRIER FREQUENCYS ..................................................................................................... 6 2.3. RECEIVER INPUT BANDWIDTH ............................................................................................................ 7 2.4. EXAMPLE OF A HOPPING SEQUENCY IN DATA MODE ....................................................................... 7 2.5. EQUALLY AVERAGE USE OF FREQUENCIES AND BEHAVIOUR ........................................................ 7 2.6. RELATED SUBMITTAL(S) / GRANT (S) .................................................................................................. 8 2.7. TEST METHODOLOGY .......................................................................................................................... 8 2.8. SPECIAL ACCESSORIES ....................................................................................................................... 8 2.9. EQUIPMENT MODIFICATIONS .............................................................................................................. 8 3. MEASUREMENT UNCERTAINTY ................................................................................................................. 9 4. DESCRIPTION OF TEST MODES ............................................................................................................... 10 5. SYSTEM TEST CONFIGURATION ............................................................................................................. 11 5.1. CONFIGURATION OF EUT SYSTEM .................................................................................................... 11 5.2 EQUIPMENT USED IN TESTED SYSTEM .............................................................................................. 11 5.3. SUMMARY OF TEST RESULTS ............................................................................................................. 11 6. TEST FACILITY ........................................................................................................................................... 12 7. PEAK OUTPUT POWER ............................................................................................................................. 13 7.1. MEASUREMENT PROCEDURE ........................................................................................................... 13 7.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ................................................................... 13 7.3. LIMITS AND MEASUREMENT RESULT ............................................................................................... 14 8. 20DB BANDWIDTH ..................................................................................................................................... 20 8.1. MEASUREMENT PROCEDURE ........................................................................................................... 20 8.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ................................................................... 20 8.3. LIMITS AND MEASUREMENT RESULTS ............................................................................................. 20 9. CONDUCTED SPURIOUS EMISSION ........................................................................................................ 27 9.1. MEASUREMENT PROCEDURE ........................................................................................................... 27 Report No.: AGC02457190605FE03 Page 4 of 68 9.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ................................................................... 27 9.3. MEASUREMENT EQUIPMENT USED .................................................................................................. 27 9.4. LIMITS AND MEASUREMENT RESULT ............................................................................................... 27 10. RADIATED EMISSION ............................................................................................................................... 37 10.1. MEASUREMENT PROCEDURE ......................................................................................................... 37 10.2. TEST SETUP ....................................................................................................................................... 39 10.3. LIMITS AND MEASUREMENT RESULT ............................................................................................. 40 10.4. TEST RESULT ..................................................................................................................................... 40 11. NUMBER OF HOPPING FREQUENCY ..................................................................................................... 50 11.1. MEASUREMENT PROCEDURE ......................................................................................................... 50 11.2. TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................. 50 11.3. MEASUREMENT EQUIPMENT USED ................................................................................................ 50 11.4. LIMITS AND MEASUREMENT RESULT .............................................................................................. 50 12. TIME OF OCCUPANCY (DWELL TIME) ................................................................................................... 51 12.1. MEASUREMENT PROCEDURE ......................................................................................................... 51 12.2. TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................. 51 12.3. MEASUREMENT EQUIPMENT USED ................................................................................................ 51 12.4. LIMITS AND MEASUREMENT RESULT ............................................................................................. 51 13. FREQUENCY SEPARATION ..................................................................................................................... 55 13.1. MEASUREMENT PROCEDURE ......................................................................................................... 55 13.2. TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................. 55 13.3. MEASUREMENT EQUIPMENT USED ................................................................................................ 55 13.4. LIMITS AND MEASUREMENT RESULT ............................................................................................. 55 14. FCC LINE CONDUCTED EMISSION TEST .............................................................................................. 56 14.1. LIMITS OF LINE CONDUCTED EMISSION TEST............................................................................... 56 14.2. BLOCK DIAGRAM OF LINE CONDUCTED EMISSION TEST ............................................................ 56 14.3. PRELIMINARY PROCEDURE OF LINE CONDUCTED EMISSION TEST .......................................... 57 14.4. FINAL PROCEDURE OF LINE CONDUCTED EMISSION TEST ........................................................ 57 14.5. TEST RESULT OF LINE CONDUCTED EMISSION TEST .................................................................. 58 APPENDIX A: PHOTOGRAPHS OF TEST SETUP ........................................................................................ 60 APPENDIX B: PHOTOGRAPHS OF EUT ....................................................................................................... 62 Report No.: AGC02457190605FE03 Page 5 of 68 1. VERIFICATION OF CONFORMITY Applicant Jiefeng Trading(Shenzhen)Co., Ltd. Address Room 8C70, 8th Floor, Block A, 8th Floor, Commercial Building, Xinghua Building, 2018 Shennan Zhong Road, Fuqiang Community, Huaqiang North Street, Futian District, Shenzhen Manufacturer Shenzhen Swetz Sound Technology Co., Limited Address Factory Address No.18 Xiantian Road, Longgang Central Shenzhen China Shenzhen Swetz Sound Technology Co., Limited No.18 Xiantian Road, Longgang Central Shenzhen China Product Designation Bluetooth Wireless Earphone Brand Name Test Model N/A SS-IE073V Series Model NTUNE 300, 1672020 Difference description All the same except for the model name Date of test Deviation Jun. 13, 2019 to Jun. 24, 2019 None Condition of Test Sample Normal Test Result Pass Report Template AGCRT-US-BR/RF We hereby certify that:

The above equipment was tested by Attestation of Global Compliance (Shenzhen) Co., Ltd. The test data, data evaluation, test procedures, and equipment configurations shown in this report were made in accordance with the procedures given in ANSI C63.10 (2013) and the energy emitted by the sample EUT tested as described in this report is in compliance with radiated emission limits of FCC PART 15.247. Tested By Reviewed By NiNi Guo(Guo Lili) Jun. 24, 2019 Max Zhang(Zhang Yi) Jun. 24, 2019 Approved By Forrest Lei(Lei Yonggang) Authorized Officer Jun. 24, 2019 Report No.: AGC02457190605FE03 Page 6 of 68 2. GENERAL INFORMATION 2.1. PRODUCT DESCRIPTION The EUT is designed as Bluetooth Wireless Earphone. It is designed by way of utilizing the GFSK, Pi/4 DQPSK and 8DPSK technology to achieve the system operation. A major technical description of EUT is described as following Operation Frequency 2.402 GHz to 2.480GHz RF Output Power 0.429dBm(Max) Bluetooth Version V 5.0 Modulation Number of channels Hardware Version Software Version BR GFSK, EDR /4-DQPSK, 8DPSK BLE GFSK 1Mbps GFSK 2Mbps 79 V2.2 V1.3 Antenna Designation PCB Antenna(Comply with requirements of the FCC part 15.203) Antenna Gain Power Supply 0dBi DC 3.7V by battery 2.2. TABLE OF CARRIER FREQUENCYS Frequency Band Channel Number 0 1

:

38 39 40

:

77 78 2402~2480MHZ Frequency 2402MHZ 2403MHZ

:

2440 MHZ 2441 MHZ 2442 MHZ

:

2479 MHZ 2480 MHZ Report No.: AGC02457190605FE03 Page 7 of 68 2.3. RECEIVER INPUT BANDWIDTH The input bandwidth of the receiver is 1.3MHZ,In every connection one Bluetooth device is the master and the other one is slave. The master determines the hopping sequence. The slave follows this sequence. Both devices shift between RX and TX time slot according to the clock of the master. Additionally the type of connection(e.g. single of multislot packet) is set up at the beginning of the connection. The master adapts its hopping frequency and its TX/RX timing according to the packet type of the connection. Also the slave of the connection will use these settings. Repeating of a packet has no influence on the hopping sequence. The hopping sequence generated by the master of the connection will be followed in any case. That means, a repeated packet will not be send on the same frequency, it is send on the next frequency of the hopping sequence. 2.4. EXAMPLE OF A HOPPING SEQUENCY IN DATA MODE Example of a 79 hopping sequence in data mode:

40,21,44,23,42,53,46,55,48,33,52,35,50,65,54,67 56,37,60,39,58,69,62,71,64,25,68,27,66,57,70,59 72,29,76,31,74,61,78,63,01,41,05,43,03,73,07,75 09,45,13,47,11,77,15,00,64,49,66,53,68,02,70,06 01, 51, 03, 55, 05, 04 2.5. EQUALLY AVERAGE USE OF FREQUENCIES AND BEHAVIOUR The generation of the hopping sequence in connection mode depends essentially on two input values:

1. LAP/UAP of the master of the connection. 2. Internal master clock The LAP(lower address part) are the 24 LSBs of the 48 BD_ADDRESS. The BD_ADDRESS is an unambiguous number of every Bluetooth unit. The UAP(upper address part) are the 24MSBs of the 48BD_ADDRESS The internal clock of a Bluetooth unit is derived from a free running clock which is never adjusted and is never turned off. For ehavior zation with other units only offset are used. It has no relation to the time of the day. Its resolution is at least half the RX/TX slot length of 312.5us.The clock has a cycle of about one day(23h30).In most case it is implemented as 28 bit counter. For the deriving of the hopping sequence the entire. LAP(24 bits),4LSBs(4bits)(Input 1) and the 27MSBs of the clock(Input 2) are used. With this input values different mathematical procedures(permutations, additions, XOR-operations)are performed to generate te Sequence. This will be done at the beginning of every new transmission. Regarding short transmissions the Bluetooth system has the following ehavior:

The first connection between the two devices is established, a hopping sequence was generated. For Transmitting the wanted data the complete hopping sequence was not used. The connection ended. The second connection will be established. A new hopping sequence is generated. Due to the fact the Bluetooth clock has a different value, because the period between the two transmission is longer(and it Cannot be shorter) than the minimum resolution of the clock(312.5us).The hopping sequence will always Differ from the first one. Report No.: AGC02457190605FE03 Page 8 of 68 2.6. RELATED SUBMITTAL(S) / GRANT (S) This submittal(s) (test report) is intended for FCC ID: 2ATX6SS-IE073V filing to comply with the FCC PART 15.247 requirements. 2.7. TEST METHODOLOGY Both conducted and radiated testing was performed according to the procedures in ANSI C63.10 (2013). Radiated testing was performed at an antenna to EUT distance 3 meters. 2.8. SPECIAL ACCESSORIES Refer to section 5.2. 2.9. EQUIPMENT MODIFICATIONS Not available for this EUT intended for grant. Report No.: AGC02457190605FE03 Page 9 of 68 3. MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95%.

- Uncertainty of Conducted Emission, Uc = 3.2 dB

- Uncertainty of Radiated Emission below 1GHz, Uc = 3.9 dB

- Uncertainty of Radiated Emission above 1GHz, Uc = 4.8 dB

- Uncertainty of total RF power, conducted, Uc = 0.8dB

- Uncertainty of spurious emissions, conducted, Uc = 2.7dB

- Uncertainty of Occupied Channel Bandwidth: Uc = 2 %

- Uncertainty of Dwell Time: Uc = 2 %

- Uncertainty of Frequency: Uc = 2 %

4. DESCRIPTION OF TEST MODES NO. TEST MODE DESCRIPTION Report No.: AGC02457190605FE03 Page 10 of 68 1 2 3 4 5 6 7 8 9 10 11 12 Low channel GFSK Middle channel GFSK High channel GFSK Low channel /4-DQPSK Middle channel /4-DQPSK High channel /4-DQPSK Low channel 8DPSK Middle channel 8DPSK High channel 8DPSK Hopping mode GFSK Hopping mode /4-DQPSK Hopping mode 8DPSK Note:

1. Only the result of the worst case was recorded in the report, if no other cases. 2. For Radiated Emission, 3axis were chosen for testing for each applicable mode. 3. For Conducted Test method, a temporary antenna connector is provided by the manufacture. 4.The test software is the BK32XX V1.7 which can set the EUT into the individual test modes. Report No.: AGC02457190605FE03 Page 11 of 68 5. SYSTEM TEST CONFIGURATION 5.1. CONFIGURATION OF EUT SYSTEM Radiated Emission Configure :

EUT Conducted Emission Configure :

EUT AE 5.2 EQUIPMENT USED IN TESTED SYSTEM Item Equipment Model No. ID or Specification Remark 1 2 Bluetooth Wireless Earphone SS-IE073V 2ATX6SS-IE073V Adapter DYS602-050200W DC 5V/2A 5.3. SUMMARY OF TEST RESULTS FCC RULES 15.247 (b)(1) 15.247 (a)(1) 15.247 (d) 15.209 15.247 (a)(1)(iii) 15.247 (a)(1)(iii) 15.247 (a)(1) 15.207 DESCRIPTION OF TEST Peak Output Power 20 dB Bandwidth Conducted Spurious Emission Radiated Emission Number of Hopping Frequency Time of Occupancy Frequency Separation Conducted Emission EUT AE RESULT Compliant Compliant Compliant Compliant Compliant Compliant Compliant Compliant Report No.: AGC02457190605FE03 Page 12 of 68 6. TEST FACILITY Test Site Attestation of Global Compliance (Shenzhen) Co., Ltd Location 1-2/F, Building 19, Junfeng Industrial Park, Chongqing Road, Heping Community, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China Designation Number CN1259 FCC Test Firm Registration Number 975832 A2LA Cert. No. 5054.02 Description Attestation of Global Compliance(Shenzhen) Co., Ltd is accredited by A2LA TEST EQUIPMENT OF CONDUCTED EMISSION TEST Equipment Manufacturer Model S/N Cal. Date Cal. Due TEST RECEIVER LISN R&S R&S ESPI 101206 Jun. 12, 2019 Jun. 11, 2020 ESH2-Z5 100086 Aug. 28, 2018 Aug. 27, 2019 TEST EQUIPMENT OF RADIATED EMISSION TEST Equipment S/N Manufacturer Model Cal. Date Cal. Due TEST RECEIVER R&S ESCI 10096 Jun. 12, 2019 Jun. 11, 2020 EXA Signal Analyzer Aglient N9010A MY53470504 Dec. 20, 2018 Dec. 19, 2019 2.4GHz Fliter Micro-tronics 087 Attenuator Weinachel Corp 58-30-33 N/A N/A Jun. 12, 2019 Jun. 11, 2020 Jun. 12, 2019 Jun. 11, 2020 Horn antenna SCHWARZBECK BBHA 9170

#768 Sep. 21, 2017 Sep. 20, 2020 Active loop antenna

(9K-30MHz) Double-Ridged Waveguide Horn Broadband Preamplifier ZHINAN ZN30900C 18051 Jun. 14, 2018 Jun. 13, 2020 ETS LINDGREN 3117 00034609 May. 26, 2018 May. 25, 2020 ETS LINDGREN 3117PA 00225134 Oct. 25, 2018 Oct. 24, 2019 ANTENNA SCHWARZBECK VULB9168 D69250 Sep. 28, 2017 Sep. 27, 2019 Report No.: AGC02457190605FE03 Page 13 of 68 7. PEAK OUTPUT POWER 7.1. MEASUREMENT PROCEDURE For peak power test:

1. Connect EUT RF output port to the Spectrum Analyzer through an RF attenuator 2. Span: Approximately five times the 20 dB bandwidth, centered on a hopping channel. 3. RBW > 20 dB bandwidth of the emission being measured. 4. VBW RBW. 5. Sweep: Auto. 6. Detector function: Peak. 7. Trace: Max hold. Allow trace to stabilize. Use the marker-to-peak function to set the marker to the peak of the emission. The indicated level is the peak output power, after any corrections for external attenuators and cables. 7.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) PEAK POWER TEST SETUP RF Attenuator Report No.: AGC02457190605FE03 Page 14 of 68 7.3. LIMITS AND MEASUREMENT RESULT PEAK OUTPUT POWER MEASUREMENT RESULT FOR GFSK MOUDULATION Frequency Peak Power Applicable Limits

(GHz) 2.402 2.441 2.480

(dBm)

-1.953

-1.953

-2.118 CH0

(dBm) 30 30 30 Pass or Fail Pass Pass Pass CH39 CH78 Report No.: AGC02457190605FE03 Page 15 of 68 Report No.: AGC02457190605FE03 Page 16 of 68 Frequency

(GHz) 2.402 2.441 2.480 PEAK OUTPUT POWER MEASUREMENT RESULT FOR /4-DQPSK MODULATION Peak Power

(dBm) Applicable Limits

(dBm) Pass or Fail 0.233 0.223 0.093 CH0 30 30 30 Pass Pass Pass CH39 CH78 Report No.: AGC02457190605FE03 Page 17 of 68 Report No.: AGC02457190605FE03 Page 18 of 68 Frequency

(GHz) 2.402 2.441 2.480 PEAK OUTPUT POWER MEASUREMENT RESULT FOR 8-DPSK MODULATION Peak Power

(dBm) Applicable Limits

(dBm) Pass or Fail 0.326 0.429 0.251 CH0 30 30 30 Pass Pass Pass CH39 CH78 Report No.: AGC02457190605FE03 Page 19 of 68 Report No.: AGC02457190605FE03 Page 20 of 68 8. 20DB BANDWIDTH 8.1. MEASUREMENT PROCEDURE 1. Connect EUT RF output port to the Spectrum Analyzer through an RF attenuator 2, Set the EUT Work on the top, the middle and the bottom operation frequency individually. 3. Set Span = approximately 2 to 5 times the 20 dB bandwidth, centered on a hoping channel The nominal IF filter bandwidth (3 dB RBW) shall be in the range of 1% to 5% of the OBW and video bandwidth (VBW) shall be approximately three times RBW; Sweep = auto; Detector function = peak 4. Set SPA Trace 1 Max hold, then View. 8.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) 8.3. LIMITS AND MEASUREMENT RESULTS MEASUREMENT RESULT FOR GFSK MOUDULATION Applicable Limits N/A Measurement Result Test Data (MHz) Low Channel Middle Channel High Channel 1.029 1.027 1.023 Criteria PASS PASS PASS Report No.: AGC02457190605FE03 Page 21 of 68 TEST PLOT OF BANDWIDTH FOR LOW CHANNEL TEST PLOT OF BANDWIDTH FOR MIDDLE CHANNEL Report No.: AGC02457190605FE03 Page 22 of 68 TEST PLOT OF BANDWIDTH FOR HIGH CHANNEL Report No.: AGC02457190605FE03 Page 23 of 68 MEASUREMENT RESULT FOR /4-DQPSK MODULATION Applicable Limits N/A Measurement Result Test Data (MHz) Low Channel Middle Channel High Channel 1.360 1.360 1.361 Criteria PASS PASS PASS TEST PLOT OF BANDWIDTH FOR LOW CHANNEL Report No.: AGC02457190605FE03 Page 24 of 68 TEST PLOT OF BANDWIDTH FOR MIDDLE CHANNEL TEST PLOT OF BANDWIDTH FOR HIGH CHANNEL Report No.: AGC02457190605FE03 Page 25 of 68 MEASUREMENT RESULT FOR 8-DPSK MODULATION Applicable Limits N/A Measurement Result Test Data (MHz) Low Channel Middle Channel High Channel 1.343 1.344 1.346 Criteria PASS PASS PASS TEST PLOT OF BANDWIDTH FOR LOW CHANNEL Report No.: AGC02457190605FE03 Page 26 of 68 TEST PLOT OF BANDWIDTH FOR MIDDLE CHANNEL TEST PLOT OF BANDWIDTH FOR HIGH CHANNEL Report No.: AGC02457190605FE03 Page 27 of 68 9. CONDUCTED SPURIOUS EMISSION 9.1. MEASUREMENT PROCEDURE 1. Connect EUT RF output port to the Spectrum Analyzer through an RF attenuator 2. Set the EUT Work on the top, the Middle and the bottom operation frequency individually. 3. Set the Span = wide enough to capture the peak level of the in-band emission and all spurious emissions from the lowest frequency generated in the EUT up through the 10th harmonic. RBW = 100 kHz; VBW= 300 kHz; Sweep = auto; Detector function = peak. 4. Set SPA Trace 1 Max hold, then View. 9.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) The same as described in section 8.2 9.3. MEASUREMENT EQUIPMENT USED The same as described in section 6 9.4. LIMITS AND MEASUREMENT RESULT LIMITS AND MEASUREMENT RESULT Applicable Limits Measurement Result Test Data Criteria In any 100 KHz Bandwidth Outside the At least -20dBc than the limit frequency band in which the spread spectrum Specified on the BOTTOM PASS intentional radiator is operating, the radio frequency Channel power that is produce by the intentional radiator shall be at least 20 dB below that in 100KHz bandwidth within the band that contains the highest level of the desired power. At least -20dBc than the limit In addition, radiation emissions which fall in the Specified on the TOP Channel PASS restricted bands, as defined in 15.205(a), must also comply with the radiated emission limits specified in15.209(a)) Report No.: AGC02457190605FE03 Page 28 of 68 TEST RESULT FOR ENTIRE FREQUENCY RANGE TEST PLOT OF OUT OF BAND EMISSIONS WITH THE WORST CASE OF GFSK MODULATION IN LOW CHANNEL Report No.: AGC02457190605FE03 Page 29 of 68 TEST PLOT OF OUT OF BAND EMISSIONS OF GFSK MODULATION IN MIDDLE CHANNEL Report No.: AGC02457190605FE03 Page 30 of 68 TEST PLOT OF OUT OF BAND EMISSIONS OF GFSK MODULATION IN HIGH CHANNEL Note: The peak emissions without marker on the above plots are fundamental wave and need not to compare with the limit. The GFSK modulation is the worst case and only those data recorded in the report. Report No.: AGC02457190605FE03 Page 31 of 68 TEST RESULT FOR BAND EDGE GFSK MODULATION IN LOW CHANNEL Hopping off Hopping on Report No.: AGC02457190605FE03 Page 32 of 68 GFSK MODULATION IN HIGH CHANNEL Hopping off Hopping on Report No.: AGC02457190605FE03 Page 33 of 68

/4-DQPSK MODULATION IN LOW CHANNEL Hopping off Hopping on Report No.: AGC02457190605FE03 Page 34 of 68

/4-DQPSK MODULATION IN HIGH CHANNEL Hopping off Hopping on Report No.: AGC02457190605FE03 Page 35 of 68 8-DPSK MODULATION IN LOW CHANNEL Hopping off Hopping on Report No.: AGC02457190605FE03 Page 36 of 68 8-DPSK MODULATION IN HIGH CHANNEL Hopping off Hopping on Report No.: AGC02457190605FE03 Page 37 of 68 10. RADIATED EMISSION 10.1. MEASUREMENT PROCEDURE 1. The EUT was placed on the top of the turntable 0.8 or 1.5 meter above ground. The phase center of the receiving antenna mounted on the top of a height-variable antenna tower was placed 3 meters far away from the turntable. 2. Power on the EUT and all the supporting units. The turntable was rotated by 360 degrees to determine the position of the highest radiation. 3. The height of the broadband receiving antenna was varied between one meter and four meters above ground to find the maximum emissions field strength of both horizontal and vertical polarization. 4. For each suspected emissions, the antenna tower was scan (from 1 M to 4 M) and then the turntable was rotated (from 0 degree to 360 degrees) to find the maximum reading. 5. Set the test-receiver system to Peak or CISPR quasi-peak Detect Function with specified bandwidth under Maximum Hold Mode. 6. For emissions above 1GHz, use 1MHz RBW and 3MHz VBW for peak reading. Place the measurement antenna away from each area of the EUT determined to be a source of emissions at the specified measurement distance, while keeping the measurement antenna aimed at the source of emissions at each frequency of significant emissions, with polarization oriented for maximum response. The measurement antenna may have to be higher or lower than the EUT, depending on the radiation pattern of the emission and staying aimed at the emission source for receiving the maximum signal. The final measurement antenna elevation shall be that which maximizes the emissions. The measurement antenna elevation for maximum emissions shall be restricted to a range of heights of from 1 m to 4 m above the ground or reference ground plane. 7. When the radiated emissions limits are expressed in terms of the average value of the emissions, and pulsed operation is employed, the measurement field strength shall be determined by averaging over one complete pulse train, including blanking intervals, as long as the pulse train does not exceed 0.1 seconds. As an alternative (provided the transmitter operates for longer than 0.1 seconds) or in cases where the pulse train exceeds 0.1 seconds, the measured field strength shall be determined from the average absolute voltage during a 0.1 second interval during which the field strength is at its maximum values. 8.If the emissions level of the EUT in peak mode was 3 dB lower than the average limit specified, then testing will be stopped and peak values of EUT will be reported, otherwise, the emissions which do not have 3 dB margin will be repeated one by one using the quasi-peak method for below 1GHz. 9. For testing above 1GHz, the emissions level of the EUT in peak mode was lower than average limit (that means the emissions level in peak mode also complies with the limit in average mode), then testing will be stopped and peak values of EUT will be reported, otherwise, the emissions will be measured in average mode again and reported. 10. In case the emission is lower than 30MHz, loop antenna has to be used for measurement and the recorded data should be QP measured by receiver. High - Low scan is not required in this case. The following table is the setting of spectrum analyzer and receiver. Report No.: AGC02457190605FE03 Page 38 of 68 Spectrum Parameter Start ~Stop Frequency Start ~Stop Frequency Start ~Stop Frequency Start ~Stop Frequency Receiver Parameter Start ~Stop Frequency Start ~Stop Frequency Start ~Stop Frequency Setting 9KHz~150KHz/RB 200Hz for QP 150KHz~30MHz/RB 9KHz for QP 30MHz~1000MHz/RB 120KHz for QP 1GHz~26.5GHz 1MHz/3MHz for Peak, 1MHz/3MHz for Average Setting 9KHz~150KHz/RB 200Hz for QP 150KHz~30MHz/RB 9KHz for QP 30MHz~1000MHz/RB 120KHz for QP 10.2. TEST SETUP Radiated Emission Test-Setup Frequency Below 30MHz Report No.: AGC02457190605FE03 Page 39 of 68 RADIATED EMISSION TEST SETUP 30MHz-1000MHz RADIATED EMISSION TEST SETUP ABOVE 1000MHz 10.3. LIMITS AND MEASUREMENT RESULT 15.209 Limit in the below table has to be followed Frequencies

(MHz) 0.009~0.490 0.490~1.705 1.705~30.0 30~88 88~216 216~960 Above 960 Field Strength

(micorvolts/meter) 2400/F(KHz) 24000/F(KHz) 30 100 150 200 500 Report No.: AGC02457190605FE03 Page 40 of 68 Measurement Distance

(meters) 300 30 30 3 3 3 3 Note: All modes were tested For restricted band radiated emission, the test records reported below are the worst result compared to other modes. 10.4. TEST RESULT RADIATED EMISSION BELOW 30MHZ No emission found between lowest internal used/generated frequencies to 30MHz. Report No.: AGC02457190605FE03 Page 41 of 68 RADIATED EMISSION BELOW 1GHZ EUT Bluetooth Wireless Earphone Model Name SS-IE073V Temperature Pressure Test Mode 25C 960hPa Mode 4 Relative Humidity 55.4%

Test Voltage Normal Voltage Antenna Horizontal NO. Freq.

[MHz]

Level

[dBV/m]

Factor

[dB]

Limit

[dBV/m]

Margin

[dB]

Height

[cm]

Angle

[]

1 2 3 4 5 6 52.3100 93.0500 148.3400 342.3400 535.3700 806.9700 23.93 19.31 21.55 23.72 29.04 35.38 14.49 10.61 14.88 17.56 22.93 28.58 40.00 43.50 43.50 46.00 46.00 46.00 16.07 24.19 21.95 22.28 16.96 10.62 200 200 200 150 100 100 334 86 82 202 187 2 Polarity Horizontal Horizontal Horizontal Horizontal Horizontal Horizontal RESULT: PASS Report No.: AGC02457190605FE03 Page 42 of 68 EUT Bluetooth Wireless Earphone Model Name SS-IE073V Temperature Pressure Test Mode 25C 960hPa Mode 4 Relative Humidity 55.4%

Test Voltage Normal Voltage Antenna Vertical NO. Freq.

[MHz]

Level

[dBV/m]

Factor

[dB]

Limit

[dBV/m]

Margin

[dB]

Height

[cm]

Angle

[]

1 2 3 4 5 6 40.6700 48.4300 79.4700 148.3400 330.7000 741.9800 24.34 28.09 18.70 20.87 23.13 33.15 14.91 14.71 10.26 14.88 17.10 27.02 40.00 40.00 40.00 43.50 46.00 46.00 15.66 11.91 21.30 22.63 22.87 12.85 100 100 100 100 100 150 260 260 16 358 360 186 Polarity Vertical Vertical Vertical Vertical Vertical Vertical RESULT: PASS Note: 1. Factor=Antenna Factor + Cable loss, Margin=Measurement-Limit. 2. All test modes had been pre-tested. The mode 4 is the worst case and recorded in the report. Report No.: AGC02457190605FE03 Page 43 of 68 RADIATED EMISSION ABOVE 1GHZ EUT Bluetooth Wireless Earphone Model Name SS-IE073V Temperature Pressure Test Mode 25C 960hPa Mode 1 Relative Humidity 55.4%

Test Voltage Normal Voltage Antenna Horizontal EUT Bluetooth Wireless Earphone Model Name SS-IE073V Temperature Pressure Test Mode 25C 960hPa Mode 1 Relative Humidity 55.4%

Test Voltage Normal Voltage Antenna Vertical FrequencyMeter ReadingFactor Emission LevelLimitsMargin (MHz)(dBV) (dB)(dBV/m)(dBV/m)(dB) 47.54 74.00 -26.46 peak 44.31 54.00 -9.69 AVG 38.35 74.00 -35.65 peak 34.70 54.00 -19.30 AVG Value Type4804.02247.46 0.084804.02244.23 0.087206.03336.14 2.217206.03332.49 2.21Remark:Factor = Antenna Factor + Cable Loss Pre-amplifier.FrequencyMeter ReadingFactor Emission LevelLimitsMargin (MHz)(dBV) (dB)(dBV/m)(dBV/m)(dB) 49.53 74.00 -24.47 peak 43.95 54.00 -10.05 AVG 40.55 74.00 -33.45 peak 37.77 54.00 -16.23 AVG Value Type4804.02249.45 0.084804.02243.87 0.087206.03338.34 2.217206.03335.56 2.21Remark:Factor = Antenna Factor + Cable Loss Pre-amplifier. Report No.: AGC02457190605FE03 Page 44 of 68 EUT Bluetooth Wireless Earphone Model Name SS-IE073V Temperature Pressure Test Mode 25C 960hPa Mode 2 Relative Humidity 55.4%

Test Voltage Normal Voltage Antenna Horizontal EUT Bluetooth Wireless Earphone Model Name SS-IE073V Temperature Pressure Test Mode 25C 960hPa Mode 2 Relative Humidity 55.4%

Test Voltage Normal Voltage Antenna Vertical FrequencyMeter ReadingFactor Emission LevelLimitsMargin (MHz)(dBV) (dB)(dBV/m)(dBV/m)(dB) 4882.02247.26 74.00 -26.74 peak 4882.02242.88 54.00 -11.12 AVG 7323.03343.89 74.00 -30.11 peak 7323.03341.12 54.00 -12.88 AVG Value Type47.12 0.1442.74 0.1441.53 2.3638.76 2.36Remark:Factor = Antenna Factor + Cable Loss Pre-amplifier.FrequencyMeter ReadingFactor Emission LevelLimitsMargin (MHz)(dBV) (dB)(dBV/m)(dBV/m)(dB) 4882.02247.66 74.00 -26.34 peak 4882.02245.34 54.00 -8.66 AVG 7323.03343.12 74.00 -30.88 peak 7323.03340.07 54.00 -13.93 AVG Value Type47.52 0.1445.20 0.1440.76 2.3637.71 2.36Remark:Factor = Antenna Factor + Cable Loss Pre-amplifier.

Test Setup Photos RADIATED EMISSION TEST SETUP BELOW 1GHZ RADIATED EMISSION TEST SETUP ABOVE 1GHZ CONDUCTED EMISSION TEST SETUP