FCC ID: 2AMNM-NC300PRO TWS ANC buds

User Guide TWS ANC Buds Thanks for your choice of our product. Specifications Overview and Packing List Linner TWS ANC buds integrate stylish appearance and functions, allowing you to experience quiet wireless calling and listening to music even in noisy environment. It is a good choice for you to work, go out, and drive. True Wireless Stereo Active Noise Cancellation Technology With the technology of Bluetooth, you can select compatible communication devices without using cables. Bluetooth does not require keeping the phone facing earphones directly, but the maximum distance between them should not exceed 10 meters (about 30 feet). Using active noise cancellation technology, the microphones collect the noise, then the acoustic engineer calculates and designs a series of software and hardware algorithms, the circuit generates a reverse sound wave that is opposite to the noise and emits it through the horn. Finally, the noise and the reverse sound wave cancel each other. Model: NC300 PRO Earphone Battery Capacity: 45mAh*2 ANC Noise Reduction: 35dB Battery Capacity (Charging Box): 380mAh Bluetooth Version: 5.2 Charging Time (Earphone): 1.5H Impedance: 32 Charging Time (Charging Box): 2H Charging Port: Type-C Working Time (ANC OFF): 7.5H Working Time (ANC ON): 6.5H The package contains Linner NC300 PRO TWS ANC buds, a charging box, 3 sizes of ear buds (the M size ear buds are pre-installed on the earphones), USB-C charging cable, user guide, and warranty card. User Guide TWS ANC Buds Warranty Card Earphone Function Diagram Touch Control Prompt Wearing Earphones Auto Power ON/OFF Indicator light Infrared in-ear detection ANC radio hole Sensing area Please touch to control instead of tapping sensing area. Anterior cavity vent hole The sensing area is located in the earphone handles upper part. Ear buds Charging pin Calling MIC In order to obtain a better noise cancellation effect, the wearing angle can be adjusted appropriately after wearing, so that the earphone is slightly pushed into the ear canal. Choose the Right Ear Buds Appropriate sizes of ear buds are essential to noise cancellation experience, sound quality and comfort. Please try on different sizes of ear buds. Please note that you may need to use different sizes of ear buds for your left and right ears. Open the cover of the charging box, the earphones will power on automatically. Auto power on Auto power off Put the earphones into the charging box, close the cover, and the earphones will power off automatically. Earphones Pairing In order to convenience operation, the pairing between left and right earphones has been completed before leaving from factory. When the cover is opened, earphones are turned on automatically, the left and right earphones are interconnected, and enter into connection or pairing status. Bluetooth Pairing Open the charging box, keep the earphone in the charging box, triple click the charging box button to force the mobile phone to enter into pairing state. Please note that this operation will not clear the previous Bluetooth pairing record. After the pairing of the left and right earphones, open the Bluetooth search in mobile phone, and connect the device. Then the mobile phone displays the pairing name as NC300 PRO. When using again, double earphones will pair with each other and return to the last pairing device automatically. Light Sensor Function Touch Operation (Operation in wearing of double earphones) Calling Control Reset For single earphone use, pick up one side and keep the other side closed in the charging box. After the earphone which is taken out failed to reconnect to TWS, it will enter the reconnecting and pairing coexistence mode within 2 seconds. After connecting the phone, take out another earphone and enter binaural mode automatically. Stay in the pairing or reconnecting state for 10 minutes. After 10 minutes, earphones enter the standby mode but will not power off automatically. Bluetooth Lost Turn off mobile phones Bluetooth, earphones will enter the pairing mode and do not connect back. (It will continue for 10 minutes. If no connection, earphones enter standby mode after 10 minutes.) If the connection range is exceeded, it will enter the back-connection mode, and can pair with other devices at the same time. (It will continue for 10 minutes. If no connection, earphones enter standby mode after 10 minutes.) ANC mode: Earphones will enter ANC mode automatically when wearing. Earphone will enter the ambient Mode automatically when using single. Answer the call: When calling comes, wear the earphones to answer the call. Music pause and play: Using double earphones to listen to music, pause the music when one earphone is out, and back to play automatically when re-wear within 1 minute. Triple touch the L sensing area, then skip to the previous song Double touch the R sensing area or single earphone in-ear/ out-ear to play or pause music Triple touch the R to skip to the next song Touch the L to decrease the volume Touch the R to increase the volume Double touch the L to switch to ambient mode Long press the L for 2 seconds to enter or exit ANC mode Touch the sensing area to answer the call or it will answer the call automatically when wearing Long press the sensing area for 2 seconds to hang up the call Long press the sensing area for 2 seconds to reject the call Open the charging box and keep the earphones in box. Long press the button of charging box for 10 seconds until the earphone LED lights and the charging box LED lights flash 3 times at the same time, the earphone will restart automatically after clearing the pairing, then enter the pairing status with mobile phone. Low Battery Alarm Voice Assistant Low battery alarm when battery voltage is lower than 3.2V, remind 1 time every 3 minutes. Earphones will not power off until the low batter is 3.0V. Alarming 3 to 4 times totally. When using double earphones, press the R for 2 seconds, then leave hold after hearing BEEP to wake up voice assistant. When using single earphone, press L or R for 2 seconds, then leave hold after hearing BEEP to wake up the voice assistant Earphones Charging Put earphones into the charging box to charge automatically Display of Charging Box Power Closing/ opening the cover, or press the button of the charging box: Indicators displays the battery level of the charging box for 5 seconds Observe the indicators Press the charging box button Indicator Status Indicator Status Earphones Mode Indicator Status Earphones Mode Indicator Status Power ON White light on for 1 second Hang up the call Hang up, the white light flashes 1 time Power OFF White light flashes 3 times, then light off Call rejected White light flashes quickly Low battery alarm White light flashes twice every 10 seconds Bluetooth pairing

(mobile phone / other device) Pairing status: white light flashes quickly

(flashing once in 0.5 seconds) Connection successfully: white light flashes once every 5 seconds Standby mode: white light flashes twice every 5 seconds Incoming call White light flashes quickly Warning Tone Power ON Power OFF Pairing status Power ON Power OFF Pairing (Broadcast in double earphones) Bluetooth pairing

(mobile phone / other device) Connected (Broadcast in double earphones) Bluetooth lost Disconnected, pairing Earphone charging When the earphone is charging, the indicator of earphone is off. Charging box: the far left light shows the charging status of the L earphone, the far right light shows the charging status of the R earphone. Lights are always on during charging, and off when fully charged. Volume Adjustment BEEP when it reach the maximum Switch ambient mode

"Ambient Mode"

Double touch the L to turn on the ambient Mode and prompt When double touch the L to normal mode, it prompts "OFF"

Warning Tone Switch ANC mode Incoming call Call rejected Reset Voice assistant Earphones prompt "ANC ON" when turn on ANC mode manually

(double touch L or long press L for 2 seconds). Earphones prompt "OFF" when turn off ANC mode manually. Android system: "incoming call" is played in a loop with a blank time of 3 seconds. Apple system: "Ringtone"

Call rejected

"Beep"

"Beep"

Low Battery Alarm Battery Low NOTE: 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 to correct the interference by one or more of the following measures:

- Reorient or relocate the receiving antenna.

- Increase the separation between the equipment and receiver.

-Connect the equipment into an 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 the user's authority to operate the equipment. 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. Place of Origin: Shenzhen, China Manufacturer: Shenzhen Shengyuan Tech Co., Ltd. Address: Floor 19F-A, China Academy of Science and Technology Development Building, No.9 Gaoxin South 1st Ave, Nanshan District, Shenzhen, China. Tele: 400-0755-705 Website: www.linner.com.cn Executive standard: Q/SYW 002-2017 CMIIT IDXXXXXXXXX

FCC ID Label Location The product does not have enough space to place the label, and FCC ID label is reflected in the user manual, as below:

Shenzhen shengyuan tech co.ltd Agent Authorization Company: Shenzhen shengyuan tech co.ltd Address: 309/Block C, Lan Guang Tech Park, No.6 Rd of Gaoxin North, Nanshan District, Shenzhen, China Product Name: TWS ANC buds Model Number(s): NC300 PRO Product Description: TWS ANC buds We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature:

Date: 2020-11-02 Name:

Ocean Xia Company: Shenzhen shengyuan tech co.ltd

Shenzhen shengyuan tech co.ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2020-10-30 Subject; Request for Confidentiality FCC ID: 2AMNM-NC300PRO To Whom It May Concern, Pursuant to the provisions of the Commissions rules Title 47 Sections 0.457 and 0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure External Photos Test Setup Photos Internal Photos User Manual In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR 2.803 and the importation rules in Title 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s);

OR For 45 days, pursuant to Public Notice DA 04-1705. For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely Shenzhen shengyuan tech co.ltd Contact person: Ocean Xia