2AN4C-1344Lenovo True Wireless Earbuds

Pair To Clear The Pairing Record Of The Earbuds Take the earbuds out of the charging case, tap any of the earbuds touch panel 7 times to enter Bluetooth pairing mode, then tap the earbuds touch panel 4 times to clear the pairing list and restore to the factory settings. Bluetooth pairing (automatic pairing when taking out the headset from the charging box) 1. The earbuds switch on automatically when taken out of the charging case. 2. The earbuds enter pairing mode after 2 seconds, rapidly flashing white/red. 3. Select "Lenovo SE-631TWC" in the Bluetooth list of the mobile device, and pair with the device. 4. Once successfully paired, the white light of the indicator will flash slowly. Earbuds LED Indicator will breath slowly while charging, and the red light will turn off after charging is complete. Charging Ear buds Charge Charging starts after insert the earbuds into the charging box, the red Charge the charging case Charging starts after insert a powered USB cable into the charging box, the Charging Case LED indicator is always on while the power is connected; Notes: Power less than 25%; One flashing LED light Power less than 50%; One solid, one flashing LED light Power less than 75%; Two solid, one flashing LED light Power less than 100%; Three solid, one flashing LED light Charging Complete; Four solid LED light How to choose applicable charger It is recommended to use the power adapter that complies with applicable national/regional regulations or one or more of the following standards: EN301389-34,IEC 62684, or other applicable interoperablity standards of power adapters. Only use an adapter that complies with international and regional safety standards(including IEC 60950/ IEC 62368) for charging. Do not use an adapter rated at more than 5.25V or less than 0.5 A as this may damage the device.Other adapters may not comply with applicable safety standard,and using such adapters to charge may result in injury or death. Touch Function To play/pause Tap the touch panel of the left/right earbuds twice. To Pick/Hang up call Tap the touch panel of the left/right earbuds twice. To next song/previous Press the left earbud touch panel and hold 2s to previous song Press the right earbud touch panel and hold 2s to next song Activate voice assistant Tap the touch panel of the left/right earbuds 3 times Bluetooth disconnected into pairing mode Tap the touch panel of the left/right earbuds 7 times 1. Turn off the Bluetooth on your mobile device, and insert both earbuds into the charging case. 2. Remove one earbud from the charging case. 3. Tap the touch panel 7 times to enter paring mode (Earbud light rapid flash white/red). 4. Tap the touch panel 6 times to reset pairing (Earbud light flash white 3 times then shut off), then place the earbud into the charging case. 5. Repeat steps 2-4 for the 2nd earbud. 6. Remove both earbuds from the charging case, and the earbuds will be paired automatically within 3 seconds. 7. Reconnect / re-pair with your mobile device. Reset the earbuds if you can only hear music/voice on one side after pairing with your mobile device. How to manually reset the earbuds. Auto reconnect After the pairing is recorded, unplug the earbuds from the charging case, and the earbuds will automatically reconnect to a recently connected mobile phone. Note: The Bluetooth of the mobile phone needs to be turned on, and the mobile phone is within the effective Bluetooth connection range of the earbuds. Bluetooth remote disconnection and reconnect 1.If the earbuds are disconnected with the mobile phone and return to the effective connection range within 10 minutes, Bluetooth will automatically reconnect. 2.If the earbuds are disconnected with the mobile phone and return to the effective range after 10 minutes, Bluetooth needs to be reconnected manually Note: If the earbuds cannot automatically reconnect with the phone, please manually connect on the Bluetooth interface of the phone. Specifications Model: Lenovo SE-631TWC Product size: 61x25x33mm Product weight: 4.1g (single ear bud), 36.2g (two ear buds and charging case.) Driver: 5.8mm bio-diaphragm speaker Input: 5V d.c.0.2A Audio decoding: SBC Ear Tips x4 Ear Buds x1 What's In The Box Choose Your Ear Tips Wearing Demonstration Ear tips x6 (Size S/M/L) Note: The size M ear tips are attached to the ear buds in-box Remove the protective film on the earbuds when taking them out of the charging case for the first time. 1. Choose the eartips that fit your ears the best. 2. Insert the earbuds into your ears. 3. Rotate and lock the earbuds. Charging Cable USB-C To USB-A x1 User Guide x1 Charging Case x1 1. Charging Case 3. Touch Panel4. Charging Case LED Indicator 2. Earbuds LED Indicator 5. Type -C Connector * Before using it for the first time, please tear off the isolation film on the headset, put the earbuds into the charging box, and the red indicator light of the earbuds lights up to the charging state to indicate the activation is completed. Functions Tap the touch panel twice Tap the touch panel 7 times Tap the touch panel twice Tap the touch panel twice Press and hold 2s Press and hold 2s Press and hold 2s / / MusicPlay Call Voice Bluetooth disconnected to enter pairing mode When the earbuds is not in the charging box Press and hold for 5s to turn on and 8s to turn off Pause Previous song Next song Pick/Hang up call Reject call Activate voice assistant Tap the touch panel 3 times Left earbud operationsRight earbud operations True Wireless Earbuds Lenovo Safety, Warranty &Quick Start Guide SE-631 TWC IMPORTANT! The operation of switches on your hi-fi system may cause clicks which at high volume settings may affect your hearing. Therefore, always set the volume control to minimum before switching between different sources. Device models equipped with wireless communications comply with the radio frequency and safety standards of any country or region in which it has been approved for wireless use. Be sure to read the Regulatory Notice …

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Lenovo SE-631TWC Regulatory Notice V1.0 Lenovo Regulatory Notice ■Read first — regulatory information Read this document before using your device. This device complies with the radio frequency and safety standards of any country or region in which it has been approved for wireless use. Install and use your device according to the following instructions. The latest version of this Regulatory Notice has also been uploaded on the Lenovo Support Web site. To refer to it, go to http://support.lenovo.com/, and then click Guides & Manuals. Lisez ce document avant d'utiliser votre appareil . Cet appareil est conforme aux normes d'un pays ou d'une région fréquence radio et de sécurité dans laquelle il a été approuvé pour une utilisation sans fil. Installez et utilisez votre appareil en suivant les instructions suivantes . La dernière version de cet avis de la réglementation a également été téléchargé sur le site Web de support Lenovo . Pour la consulter , allez à http://support.lenovo.com/ , puis cliquez sur Guides et manuels . ■ USA — Federal Communications Commission (FCC) I. Integrated Bluetooth function • FCC ID: 2AN4C-1344 Wireless LAN Integrated Bluetooth function marketed in the USA and Canada do not support nor function in the extended channels (12ch, 13ch). i) The FCC RF Exposure compliance: The radiated energy from the antenna conforms to the FCC limit of the MPE requirement regarding 47 CFR Part 2 section 1093. ii) FCC ID of wireless function: The FCC ID for the Integrated Bluetooth function is indicated on the label affixed on the bottom side of your device. iii) Radio Frequency interference requirements: • This product has been tested and found to comply with the limits for a Class B digital device pursuant to FCC Part 15 Subpart B and C. II. Simultaneous use of RF transmitters Please make sure of the following conditions on use of wireless features: 1. When you use any other RF option device, all other wireless features including the above integrated devices in your Lenovo device are required to be turned off. 2. Users must follow the RF Safety instructions on wireless option devices that are included in the RF option device’s user’s manual. ■ Canada- Innovation, Science and Economic Development Canada (ISED) I) Integrated Bluetooth function • IC: 10276A-1344 Wireless LAN Integrated Bluetooth function marketed in the USA and Canada do not support nor function in the extended channels (12ch, 13ch). The IC number for the Integrated Bluetooth function is indicated on the label affixed on the bottom side of your device. II) Low power license-exempt radio communication devices (RSS-247): Operation is subject to the following two conditions: 1. This device may not cause interference, and 2. this device must accept any interference, including interference that may cause undesired operation of the device. III) Exposure of humans to RF fields (RSS-102): Lenovo products employ low gain integral antennas that do not emit RF field in excess of Health Canada limits for the general population; consult Safety Code 6, obtainable from Health Canada’s Web site at www.hc-sc.gc.ca/rpb The radiated energy from the antennas connected to the wireless adapters conforms to the IC limit of the RF exposure requirement regarding IC RSS-102, Issue 5 clause 4.2. Numéro d’homologation IC I) Modules de réseaux local sans fil pré-installé à l’usine: • IC: 10276A-1344 Fonction LAN sans fil Bluetooth intégré commercialisé aux Etats-Unis et le Canada ne prend pas en charge ni fonction dans les canaux étendus (12CH, 13CH). Le numéro IC pour la fonction Bluetooth intégré est indiqué sur l'étiquette apposée sur le côté bas de votre appareil. II) Remarque relative aux appareils de communication radio de faible puissance sans licence (CNR-247): Le fonctionnement de ce type d’appareil est soumis aux deux conditions suivantes: 1. Cet appareil ne doit pas perturber les communications radio, et 2. cet appareil doit supporter toute perturbation, y compris les perturbations qui pourraient provoquer son dysfonctionnement. L'utilisation de ce dispositif est limité à l'intérieur dans le 5150-5350MHz de bande III) Exposition des êtres humains aux champs radioélectriques (RF) (CNR-102): Produits Lenovo emploient antennes à gain faible intégrales qui ne émette pas de champ RF dépassant les limites de Santé Canada pour la population générale ; consultez le Code de sécurité 6, disponible sur le site Web de Santé Canada à www.hc-sc.gc.ca/rpb L'énergie rayonnée par les antennes reliées aux adaptateurs sans fil conforme à la limite IC de l'exigence de l'exposition aux RF IC concernant RSS - 102 , Issue 5 clause 4.2 ■ Electronic emission notices for North America Federal Communications Commission (FCC) Supplier’s Declaration of Conformity The following information refers to Lenovo True Wireless Earbuds , PN: ZG38C03208 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 an authorized dealer or service representative for help. Lenovo is not responsible for any radio or television interference cause…

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RF_160, Issue 04 Shenzhen Grandsun Electronic Co., Ltd. Declaration of Authorization We Name:Shenzhen Grandsun Electronic Co., Ltd. Address:The East Gaoqiao Industry Zone, Pingdi Town, Longgang District, Shenzhen City, Guangdong Province, China City: Shenzhen Country: China Declare that: Name Representative of agent: Jenny Guo Agent Company name: Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch Address: No. 96, Guantai Road (Houjie Section) Houjie Town Dongguan City, Guangdong 523942, China City: Dongguan Country: China is authorized to apply for Certification of the following product(s): Product description: Lenovo True Wireless Earbuds Type designation: Lenovo SE-631TWC，233621 Droplet Trademark: 233621, Lenovo Validity/ expiry date ：2021/09/15 on our behalf. Date: 2020/09/15 City: Shenzhen Name: Felix Lee Function: Certification Engineer Signature: Notes: (1): Required for FCC application (2): For FCC it must be the Grantee Code “owner” or the authorized agent.

FCC, Request for non-disclosure Date: 21-Nov-2018 RF_501, Issue 8 Page 1 of 1 Company Name: Shenzhen Grandsun Electronic Co., Ltd. Address: The East Gaoqiao Industry Zone, Pingdi Town, Longgang District, Shenzhen City, Guangdong Province, China City: Shenzhen Country: China To: Telefication B.V., Dept. FCC TCB Edisonstraat 12A 6902 PK ZEVENAAR The Netherlands Subject: Request for confidentiality FCC ID: 2AN4C-1344 Reference number: Lenovo SE-631TWC，233621 Droplet Dear FCC TCB, 1. Long-Term Confidentiality Pursuant to 47 CFR Section 0.459(a) & (b), we hereby requests non-disclosure and confidential treatment of the following materials submitted in support of FCC certification application: Bill(s) of Material Block Diagrams Operational Description Schematic Diagrams Tune-up Procedure Above materials contain secrets, proprietary and technical information, which would customarily be guarded from competitors under 47 CFR, section 0.457(d)(2). Disclosure or publication or any portion of this company confidential material to other parties could cause substantial competitive harm and provide unjustified benefits for competitors. 2. Short-Term Confidentiality (STC) Pursuant to Public Notice DA 04-1705 of the Commission’s policy, in order to comply with the marketing regulations in 47 CFR §2.803 and the importation rules in 47 CFR §2.1204, applicant hereby requests Short-Term Confidential treatment of the following materials initial period 180 days (See notes below): Internal Photos User’s Manual Test Set-up Photos External Photos Justification: Don’t showed these documents in FCC website before they appear on the market. Date: 2020/09/15 Name and signature of applicant: Notes: 1) A document or type of document can only have ONE type of confidentiality! 2) Short-Term confidentiality is in principle for 45 days from date of grant; it can be extended max 3 times (total time 180 days max.)! The planned date should stated in the RF731 application form. 3) FCC must be informed when marketing begins earlier. 4) Release takes place automatically thus extension must be requested in time. Telefication does not remind you of this! 5) Request for extension or for release must be received by Telefication at least 7 days before date of actual marketing or before expiration of the STC period

Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 1 of 7 Report Version 1 Reference No.:200702N023 PHOTOGRAPHS OF THE EUT Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 2 of 7 Report Version 1 Reference No.:200702N023 Left earphone Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 3 of 7 Report Version 1 Reference No.:200702N023 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 4 of 7 Report Version 1 Reference No.:200702N023 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 5 of 7 Report Version 1 Reference No.:200702N023 Right earphone Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 6 of 7 Report Version 1 Reference No.:200702N023 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 7 of 7 Report Version 1 Reference No.:200702N023

Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 1 of 10 Report Version 1 Reference No.: 200702N023 EPHOTOGRAPHS OF THE EUT Left Earbud Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 2 of 10 Report Version 1 Reference No.: 200702N023 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 3 of 10 Report Version 1 Reference No.: 200702N023 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 4 of 10 Report Version 1 Reference No.: 200702N023 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 5 of 10 Report Version 1 Reference No.: 200702N023 Right earbud Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 6 of 10 Report Version 1 Reference No.: 200702N023 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 7 of 10 Report Version 1 Reference No.: 200702N023 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 8 of 10 Report Version 1 Reference No.: 200702N023 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 9 of 10 Report Version 1 Reference No.: 200702N023 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 10 of 10 Report Version 1 Reference No.: 200702N023 BT ANT

Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 1 of 6 Report Version 1 Test Report No.: FM200702N023 RF EXPOSURE REPORT Applicant Shenzhen Grandsun Electronic Co., Ltd. Address The East Gaoqiao Industry Zone, Pingdi Town, Longgang District, Shenzhen City, Guangdong Province, China Manufacturer or Supplier Lenovo PC HK Limited Address 23/F, Lincoln House, Taikoo Place 979 King's Road, Quarry Bay, Hong Kong, P.R. China Product Lenovo True Wireless Earbuds Brand Name 233621, Lenovo Model Lenovo SE-631TWC Additional Model & Model Difference 233621 Droplet; see item 1 Date of tests Jul. 02, 2020 ~ Sep. 10, 2020 FCC Part 2 (Section 2.1093) KDB 447498 D01 IEEE C95.1 CONCLUSION: The submitted sample was found to COMPLY with the test requirement Tested by Lucas Chen Project Engineer / EMC Department Approved by Glyn He Assistant Manager / EMC Department Date: Sep. 15, 2020 This report is governed by, and incorporates by reference, CPS Conditions of Service as posted at the date of issuance of this report at http://www.bureauveritas.com/home/about-us/our-business/cps/about-us/terms-conditions/and is intended for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. Measurement uncertainty is only provided upon request for accredited tests. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence or if you require measurement uncertainty; provided, however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute you unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 2 of 6 Report Version 1 Test Report No.: FM200702N023 TABLE OF CONTENTS RELEASE CONTROL RECORD ................................................................................ 3 1. CERTIFICATION .............................................................................................. 4 2. RF EXPOSURE DEFINE ................................................................................. 5 3. CLASSIFICATION ........................................................................................... 5 4. SAR TEST EXCLUSION THRESHOLDS ........................................................ 6 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 3 of 6 Report Version 1 Test Report No.: FM200702N023 RELEASE CONTROL RECORD ISSUE NO. REASON FOR CHANGE DATE ISSUED FM200702N023 Original release Sep. 15, 2020 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 4 of 6 Report Version 1 Test Report No.: FM200702N023 1. CERTIFICATION FCC ID: 2AN4C-1344 PRODUCT: Lenovo True Wireless Earbuds BRAND NAME: 233621, Lenovo MODEL NO.: Lenovo SE-631TWC ADDITIONAL NO.: 233621 Droplet TEST SAMPLE: Engineering Sample APPLICANT: Shenzhen Grandsun Electronic Co., Ltd. STANDARDS: FCC Part 2 (Section 2.1093) KDB 447498 D01 IEEE C95.1 NOTES: 1. Additional model 233621 Droplet is identical with the test model Lenovo SE-631TWC except model name for trading purpose. Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 5 of 6 Report Version 1 Test Report No.: FM200702N023 2. RF EXPOSURE DEFINE The corresponding SAR Exclusion Threshold condition, listed below: 1) 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,16 where   f(GHz) is the RF channel transmit frequency in GHz   Power and distance are rounded to the nearest mW and mm before calculation   The result is rounded to one decimal place for comparison The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. 2) At 100 MHz to 6 GHz and for test separation distances > 50 mm, the SAR test exclusion threshold is determined according to the following: a) [Threshold at 50 mm in step 1) + (test separation distance - 50 mm)·…

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Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 1 of 38 Report Version 1 Test Report No.: RF200702N023-2 TEST REPORT Applicant Shenzhen Grandsun Electronic Co., Ltd. Address The East Gaoqiao Industry Zone, Pingdi Town, Longgang District, Shenzhen City, Guangdong Province, China Manufacturer or Supplier Lenovo PC HK Limited Address 23/F, Lincoln House, Taikoo Place 979 King's Road, Quarry Bay, Hong Kong, P.R. China Product Lenovo True Wireless Earbuds Brand Name 233621, Lenovo Model Lenovo SE-631TWC Additional Model & Model Difference 233621 Droplet; see item 3.1 Date of tests Jul. 02, 2020 ~ Sep. 10, 2020 the tests have been carried out according to the requirements of the following standard: FCC Part 15, Subpart C, Section 15.247 CONCLUSION: The submitted sample was found to COMPLY with the test requirement Tested by Lucas Chen Project Engineer / EMC Department Approved by Glyn He Assistant Manager / EMC Department Date: Sep. 15, 2020 This report is governed by, and incorporates by reference, CPS Conditions of Service as posted at the date of issuance of this report at http://www.bureauveritas.com/home/about-us/our-business/cps/about-us/terms-conditions/and is intended for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. Measurement uncertainty is only provided upon request for accredited tests. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence or if you require measurement uncertainty; provided, however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute you unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 2 of 38 Report Version 1 Test Report No.: RF200702N023-2 TABLE OF CONTENTS RELEASE CONTROL RECORD ............................................................................................................ 4 1 SUMMARY OF TEST RESULTS .....................…

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