FCC ID: 2BBUX-TW30B TWS Headphones

60.00 0 0 0 8

. fornt back This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: 1) this device may not cause harmful interference, and 2) this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try correct the interference by one or more of the following measures:

Reorient the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into and outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. Changes or modifications not expressly approved by the party responsible for compliance could void your authority to operate the equipment. FCC ID:2BBUX-TW30B

Product Name : TWS Headphones Brand Mark + beTron Model No. 1 TW30B FCC ID 1 2BBUX-TW30B Ba 9.4 () 128017 Oe fee 7 8 9 20302

Application:

WLAN, 802.11b/g, Bluetooth, WLAN, etc Features SMD, high reliability, ultra Impact, Omni-directional Part number Information RANT 2012

(B) 245

(D) F

(C)

(A) X

(E) 5

(F)

(A)Product Type Chip Antenna

(B) Size Code

(C) Material

(D) Frequency 2.0x1.2mm(+-0.2mm) High K material 2.4 ~ 2.5GHz

(E) Feeding mode PIFA & Single Feeding

(F) Antenna type Type=5 Electrical Specification Working Frequency Range 2400 ~2484 MHz Bandwidth Peak Gain Impedance Return loss Polarization Azimuth Beamwidth Operation Temperature() Resistance to Soldering Heats Termination The specification is defined on EVB. 84 (Min.) 2.0 dBi (Typ.) 50 Ohm 10 dB ( Min) Linear Omni-directional

-40 ~85 10sec. ( @ 280) Ni / Au (Leadless) Dimension and Terminal Configuration Dimension (mm) No. Terminal Name L W T 2.05+-0.15 1.20+-0.15 0.85+-0.10 1 2 Feeding/GNG GND 2.4GHz 2012 Chip Antenna: RANT2012F245X5 RAIN International Technology Co., Ltd. TEL: 13530576606 Evaluation Board Reference PCB Dimension Antenna Layout Reference Unit :mm Electrical Characteristics Return Loss Return Loss & Radiation 1 Radiation Frequency(MHz) 2400 2450 2484 S11 (dB)

-10.77

-24.81

-10.243 Z Y X 2400MHz 2450MHz 2500MHz Efficiency 70.56%

75.25%

71.01%

Peak Gain 1.72 dBi 1.95 dBi 1.69 dBi 2.4GHz 2012 Chip Antenna: RANT2012F245X5 2.11 dBi 2.69 dBi 2.26 dBi Directivity Taping Specifications Reel Specification Reel and Taping Specification TYPE SIZE A B C D 2012 7 5K/Reel 9.00.5 602 13.50.5 1782 Tapping Specification Packaging Type A B W E F G H T D P Paper Type 2012 1.500.20 2.300.20 8.00.20 1.750.10 3.50.05 4.00.10 2.00.05 0.750.10 1.570.10 4.00.1 2.4GHz 2012 Chip Antenna: RANT2012F245X5 Reliability Table Test Item Electrical Characterization Thermal Shock Temperature Cycling High Temperature Exposure Low Temperature Storage Solderability

(SMD Bottom Side) Soldering Heat Resistance

(RSH) Vibration Mechanical Shock Procedure 1. Preconditioning:

50 10 / 1 hr , then keep for 24 1 hrs at room temp. 2. Initial measure: Spec: refer Initial spec. 3. Rapid change of temperature test:

-30 to +85; 100 cycles;

15 minutes at Lower category temperature;

15 minutes at Upper category temperature. 1. Initial measure: Spec: refer Initial spec. 2. 100 Cycles (-30 to +85), Soak Mode=1(2 Cycle/hours). 3. Measurement at 24 2Hours after test condition. 1. Initial measure: Spec: refer Initial spec. 2. Unpowered; 500hours @ T=+85. 3. Measurement at 24 2 hours after test. 1. Initial measure: Spec: refer Initial spec. 2. Unpowered: 500hours @ T= -30. 3. Measurement at 24 2 hours after test. Dipping method:

a. Temperature: 235 5C b. Dipping time: 3 0.5s Preheating temperature: 150 10C. Preheating time: 1~2 min. Solder temperature: 260 5C. Dipping time: 5 0.5s 5g's for 20 min., 12 cycles each of 3 orientations Note: Use 8"X5" PCB .031" thick 7 secure points on, one long side and 2 secure points at corners of opposite sides. Parts mounted within 2" from any secure point. Test from 10-2000 Hz. Three shocks in each direction shall be applied along the three mutually perpendicular axes of the test specimen (18 shocks) Peak value: 1,500gs Duration: 0.5ms Velocity change: 15.4 ft/s Waveform: Half-sine Requirements Ceramic Type Fulfill the electrical specification No Visible Damage. Fulfill the electrical specification. Remark

(Reference) User Spec. MIL-STD-202 107 No Visible Damage. Fulfill the electrical specification. No Visible Damage. Fulfill the electrical specification. No Visible Damage. Fulfill the electrical specification. The solder should cover over 95% of the critical area of bottom side. No Visible Damage. JESD22 JA104 MIL-STD-202 108 MIL-STD-202 108 IEC 60384-21/22 4.10 IEC 60384-21/22 4.10 No Visible Damage. MIL-STD-202 Method 204 No Visible Damage. MIL-STD-202 Method 213 Humidity Bias 1. Humidity: 85% R.H., Temperature: 85 2C. 2. Time: 500 24 hours. 3. Measurement at 24 2hrs after testcondition. No Visible Damage. Fulfill the electrical specification. MIL-STD-202 Method 106 2.4GHz 2012 Chip Antenna: RANT2012F245X5 2.4GHz 2012 Chip Antenna: RANT2012F245X5 Board Flex

(SMD) 1. Mounting method:

No Visible Damage. IR-Reflow. PCB Size (L:100 W:40 T:1.6mm) 2. Apply the load in direction of the arrow until bending reaches 2 mm. _ AEC-Q200 005 Adhesion Force of 1.8Kg for 60 seconds. AEC-Q200 006 No Visible Damage Magnification of 20X or greater may be employed for inspection of the mechanical integrity of the device body terminals and body/terminal junction. Physical Dimension Any applicable method using x10 magnification, micrometers, calipers, gauges, contour projectors, or other measuring equipment, capable of determining the actual specimen dimensions. In accordance with specification. JESD22 JB100 Revision History Revision Date Content 1 2020/10/15 New Datasheet 2.4GHz 2012 Chip Antenna: RANT2012F245X5

DATE:2023/7/21 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 2104 6 Authority to Act as Agent On our behalf, I appoint BlueAsia of Technical Services(Shenzhen) Co.,Ltd And Building C, No. 107, Shihuan Road, Shiyan Sub-District, Baoan District, Shenzhen,

(Name of Agent company name and address) to act as our Guangdong Province, China I certify that this application for equipment certification. in the preparation of agent submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commissions regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on ourbehalf, I acknowledge that all responsibility for complying with the terms and conditionsfor certification, still resides with Betron Limited /UNIT B03 , LEYTON INDUSTRIAL VILLAGE ARGALL AVENUE LONDON E10 7QP UNITED KINGDOM.

<Signature>

NameHaiping Li Titlemanager CompanyBetron Limited

DATE 2023/7/21 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2BBUX-TW30B Product Name: TWS Headphones Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commissions rules, we hereby request that the following documents be held confidential:

(List here the documents for which you are seeking confidentiality for example ) Schematics Block diagram Operation description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors.

<Signature>

NameHaipi ng Li Titlemanager Company Betron Limited

Product Name : TWS Headphones Model No. : TW30BTW30W FCC ID : 2BBUX-TW30B All above models are identical in the same PCB layout, interior structure and electrical circuits. The differences are model name for commercial purpose. The device have left and right earphones left and right earphones are electrically identical.

<Signature>

Name: Haiping Li DATE 2023/7/21 Title: Manager Company: Betron Limited

Betron Limited

(date)2023/7/21 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCCID: 2BBUX-TW30B)

[Betron Limited] (the applicant) certifies that the equipment for which authorization is sought is not covered equipment prohibited from receiving a n equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely,

(Applicant signature)

(Applicant printed name): Haiping Li Betron Limited

(date)2023/7/21 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCCID:2BBUX-TW30B)[Betron Limited] (the applicant) certifies that, filing of the application, the applicant is not identified on the Covered List as an entit y as of the date of the producing covered equipment. Sincerely,

(Applicant signature)

(Applicant printed name): Haiping Li

C5266091_X23_Ed.1 US AGENT LETTER OF ATTESTATION US Agent:

Company Name:Baihetian Innovative Solutions Contact Name:Kenneth Young Address:6837 Chase Rd Dearborn, MI 48126 Telephone No::313-395-3113 Fax No:/

Email:ken.young@baihetiansolutions.com FRN: 0033401605 TO:

Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 This letter is to confirm that we have accepted the responsibility to act as US agent representative on behalf of the (Betron Limited) noted below for all future FCC certification/registrations obtained during the period of this agreement, which ends at the specified date below. As per US agent, we are aware of the requirements involved as outlined in FCC Equipment Authorization Program in their Report and Order FCC 22-84 and the clause 2.911 Application requirements. 2BB Applicant Company name: Betron Limited Granteecode:

FCCID:2BBUX-TW30B ContactName:

Address:

TelephoneNo:

FaxNo:

UX

8613760427710 Haiping Li UNIT B03 , LEYTON INDUSTRIAL VILLAGE ARGALL AVENUE LONDON E10 7QP UNITED KINGDOM

0033946898 Email:

FRN:

TheApplicantacknowledgetheacceptanceofitsobligationtomaintainanagentfor service of process in the United States for no less than one year after either the granteehaspermanentlyterminatedallmarketingandimportationoftheapplicable equipment within the U.S., or the conclusion of any Commission-related administrativeorjudicialproceedinginvolvingtheequipment,whicheverislater

. Date:2023-07-21 ApplicantsName: Haiping Li US Agents Name:Kenneth Young Title:

Signature Title:/manager Signature 1/1