2AAP8-LT310Lenovo YOGA True Wireless Stereo Earbuds

Display Manager Lenovo A ccessories and On 3s 2s X 1 X 2 Lenovo YOGA True Wireless Stereo Earbuds (LT310) https://support.lenovo.com (1P) PN: SP41N63511 Printed in China Safety information English The operating temperature range for the product is between 5°C (41°F) and 35°C (95°F). General battery notice DANGER Batteries supplied by Lenovo for use with your product have been tested for compatibility and should only be replaced with approved parts. Except the battery specified by Lenovo, a disassembled or modified battery is not covered by the warranty. Battery abuse or mishandling can cause overheat, liquid leakage, or an explosion. To avoid possible injury, do the following: • Do not open, disassemble, or service any battery. • Do not crush or puncture the battery. • Do not short-circuit the battery, or expose it to water or other liquids. • Keep the battery away from children. • Keep the battery away from fire. • Do not leave the battery in an extremely high-temperature environment or an extremely low air pressure environment. • Stop using the battery if it is damaged, or if you notice any discharge or the buildup of foreign materials on the battery leads. We recommend that the batteries be charged about once every three months to prevent overcharge. • Do not put the battery in trash that is disposed of in landfills. When disposing of the battery, comply with local laws or regulations. Built-in rechargeable battery notice DANGER • Do not attempt to replace the internal rechargeable lithium batteries. • Replacement of the battery must be done by a Lenovo-authorized repair facility or technician. • Only recharge the battery strictly according to instructions included in the product documentation. • Lenovo-authorized repair facilities or technicians recycle Lenovo batteries according to local laws and regulations. Arabic معلومات الأمان یتراوح نطاق درجھ حرارة التشغیل للمنتج بین 5° مئویة )41° فھرنھایت( و35° مئویة )95° فھرنھایت(. إشعار البطاریة العام خطر دة من قبل شركة ّ تم اختبار البطاریات المزوLenovo للاستخدام مع منتجك للتأكد من توافقھا وینبغي استبدالھا بالقطع المعتمدة فقط. باستثناء البطاریة المحددة من قبل شركة Lenovo، لا یغطي الضمان أي بطاریة تم تفكیكھا أو تعدیلھا. قد یتسبب سوء استعمال البطاریة أو التعامل معھا بصورة خاطئة في ارتفاع درجة حرارتھا أو تسرب السوائل منھا أو حدوث انفجار. لتفادى الإصابة المحتملة، قم بما یلي: • لا تعمل على فتح أي بطاریة أو تفكیكھا أو صیانتھا. • لا تعمل على تحطیم البطاریة أو ثقبھا. • لا تقصر الدائرة ضھا للماء أو سوائل أخرى. ّ الكھربائیة للبطاریة أو تعر • احتفظ بالبطاریة بعیدًا عن متناول الأطفال. • اعمل على إبعاد البطاریة عن النار. • لا تترك البطاریة في بیئة حیث درجات الحرارة عالیة جدًا أو بیئة یكون فیھا ضغط الھواء شدید الانخفاض. • توقف عن استخدام البطاریة إذا تعرضت للتلف، أو إذا لاحظت تسرب أي سوائل منھا أو تراكم مواد غریبة على موصلاتھا. نحن نوصي بشحن البطاریات بواقع مرة كل ثلاثة أشھر لمنع الشحن الزائد. • البطاریة في القمامة التي یتم التخلص منھا في المكبات. عند التخلص من البطاریة، التزم بالقوانین أو اللوائح ِ لا تلق المحلیة. إشعار البطاریات المضمنة القابلة لإعادة الشحن خطر • لا تحاول استبدال بطاریات اللیثیوم الداخلیة القابلة لإعادة الشحن. • یجب أن یتم استبدال البطاریة في منشأة صیانة معتمدة أو فني معتمد من Lenovo. • نة في وثائق المنتج. ّ لا تقم بإعادة شحن البطاریة إلا في ضوء الالتزام التام بالإرشادات المضم • تقوم منشآت الصیانة المعتمدة أو الفنیون المعتمدون من شركة Lenovo بإعادة تدویر بطاریات Lenovo ا للقوانین واللوائح ً وفق التنظیمیة المحلیة. Bahasa Indonesia Informasi keamanan Kisaran temperatur pengoperasian untuk produk adalah antara 5°C (41°F) dan 35°C (95°F). Pemberitahuan umum tentang baterai BAHAYA Baterai yang disediakan oleh Lenovo untuk digunakan pada produk Anda telah melewati uji kompatibilitas dan hanya boleh diganti dengan komponen yang telah disetujui. Kecuali baterai telah ditentukan oleh Lenovo, baterai yang telah dibongkar atau dimodifikasi tidak dicakup oleh garansi. Penyalahgunaan atau kesalahan penanganan baterai dapat menyebabkan panas berlebih, kebocoran cairan, atau ledakan. Untuk menghindari kemungkinan cedera, lakukan hal berikut: • Jangan pernah membuka, membongkar, atau memperbaiki baterai. • Jangan memukul atau melubangi baterai. • Jangan sampai baterai korsleting, atau terkena air atau cairan lain. • Jauhkan baterai dari jangkauan anak-anak. • Jauhkan baterai dari api. • Jangan meninggalkan baterai di lingkungan bersuhu sangat tinggi atau lingkungan bertekanan udara sangat rendah. • Hentikan penggunaan jika baterai rusak, atau jika Anda mendeteksi baterai bocor atau ada penumpukan material asing di kabel baterai. Kami sarankan agar baterai diisi kira-kira satu kali dalam tiga bulan untuk mencegah pengisian berlebih. • Jangan membuang baterai ke tempat sampah yang akan dibuang ke pusat pembuangan sampah umum. Saat membuang baterai, patuhi undang-undang atau peraturan lokal yang berlaku. Pemberitahuan tentang baterai isi ulang terintegrasi BAHAYA • Jangan mencoba untuk mengganti baterai lithium isi ulang internal. • Penggantian baterai harus dilakukan di fasilitas reparasi resmi atau oleh teknisi resmi Lenovo. • Hanya lakukan pengisian baterai sesuai petunjuk yang disertakan dalam dokumentasi produk. • Fasilitas reparasi atau teknisi resmi Lenovo akan mendaur ulang baterai Lenovo sesuai dengan undang-undang dan peraturan lokal. Brazilian Portuguese Informações sobre segurança A faixa de temperatura de operação do produto está entre 5 °C (41 °F) e 35 °C (95 °F). Aviso geral sobre baterias PERIGO Foi testada a compatibilidade das baterias fornecidas pela Lenovo para utilização com o produto, e elas devem ser substituídas somente por peças aprovadas. Exceto pela bateria especificada pela Lenovo, uma bateria desmontada ou modificada não é coberta pela garantia. O abuso ou uso incorreto da bateria podem causar superaquecimento, vazamento de líquidos ou explosão. Para evitar possíveis ferimentos, faça o seguinte: • Não abra, desmonte ou conserte qualquer bateria. • Não comprima nem perfure a bateria. • Não provoque curto-circuito na bateria nem…

Text truncated - open the document above for the full version.

C20 M:0 Y:0 K:100 Pantone: 485C Lenovo Leno vo Excellent Audio Performance Bluetooth Dual Connection Active Noise Cancellation www.lenovo.com Lenovo YOGA True Wireless Stereo Earbuds True Wireless Stereo Earbuds True Wireles s Stereo Ea rbuds Lenovo and the YOGA logo are trademarks of Lenovo. ALL other trademarks are the pr operty of their respective owners. ©2023 Lenovo. All rights reserved. Безд ро тові нав ушники, Виробник «Леново ПK ГК Лімітед». 23/Ф. Лінк ольн Х ау с, Т аіку Плейс, 979, Кинг с Роад, Кваєрі Бей, Гонк онг, Кит ай. Уповноважений предс тавник ТОВ "Леново Юкрейн", вул. Г либочицька, б уд. 32Б, м. Київ,04050 Укр аїна Buds Batt ery Playing Time Batt ery Life With Case Charging Time speaker Size Impedance Bluetooth Version 执行标准 : Up To 6.5 Hours(ANC Off) : Up To 26 Hours : 1.5 Hours : 12 mm : 16 : 5.3 : Q/HDLCS010 3-2018 Ω Technical Specifications 300mmCharging Case XS*2; S*2; L*2 LidBottom The Bluetooth® wor d mark and logos are register ed trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Lenovo is under license. Other trademarks and trade names are those of their respective owners. Type Approved Safety Regular production Surveilance www.tuv.com ID xxxxxxxxx CERTIF IED NTC Type Accepted No.ESD-CPE-XX-XXXXX OMAN - TRA X/NNNN/YY Dyynnnn ERXXXX/XX United Arab Emirates TBD TA-XXXX/XXXX éléments d'emballage + notice Cet appareil, ses accessoires, piles et cord ons se re cycl ent OU FR FR À DÉPOSER EN MAGASIN À DÉPOSER EN DÉCHÈTERIE INGESTION HAZARD:This product contains a button cell or coin battery. DEATH or serious injury can occur if ingested. A swallowed button cell of coin battery can cause Internal Chemical Burus in as little as 2 hours. KEEP new and used batteries OUT OF REACH of CHILDREN Seek immediate medical attention if a battery is suspected to be swallowed or inserted inside any part of the body. A statement indicating the product contains non-replaceable batteries. KEEP new and used batteries OUT OF REACH of CHILDREN Seek immediate medical attention if a battery is suspected to beswallowed or inserted inside any part of the body. The product contains non-replaceable batteries Battery Type: Pouch Battery Nominal Voltage: 3.7V IS 616/ IEC60065 R-XXXXXXXX www.bis.gov.in RAMATEL X-XXXXX UK Contact: Lenovo, Redwood, Crockford Lane, Basingstoke, RG24 8WQ, UK Lenovo(Slovakia), Landererova 12, 811 09 Bratislava, Slovakia CIDF15000051 XXX XX Lenovo YOGA True Wir eless Ster eo Earbuds Retail Version Box Artwork FCC ID: 2AAP8-LT310 IC: 9043A-L T310

-------------- ----------------------------- Lenovo US 8001 Development Drive Morrisville, NC 27560 United States Date: January 4, 2024 Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Subject: Certification designating a U.S. agent for service of process pursuant to Part 2.911(d)(7) To whom it may concern, [Guoguang Electric Co., Ltd. ] and FCC Grantee code ： [2AAP8 ] (“the applicant”) certifies that, as of the date of the filing of application, [Lenovo (United States) Incorporated] (“the agent”) is designated as the U.S. agent for the purpose of accepting service of process on behalf of the applicant for Lenovo branded products. The physical U.S. address and email for the designated agent are: Physical U.S. address: [8001 Development Drive, Morrisville, NC 27560, United States] FRN: 0012799359 Email: [[email protected]] The applicant accepts to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. The agent accepts the designation by (the applicant) as the U.S. agent to accept service of process includes, but is not limited to, delivery of any correspondence, notices, orders, decisions, and requirements of administrative, legal, or judicial process related to Commission proceedings. Signed by the Applicant Signed by the Agent (if different from the Applicant) Signature of Agent (Brian Killebrew) Name: Mr Alan Song Name: Brian Killebrew Title: product manager Address: No.8 Jinghu Road, Xinya Street, Huadu Reg, Guangzhou, Guangdong, China Title: Director, Corporate Regulatory Compliance, Standards and ISO 9001 Email: [email protected] Email: [email protected] FCC ID: 2AAP8-LT310 FRN: 0022873632

Guoguang Electric Co., Ltd. Attestation Statements Not Covered Entity Applicant To: Federal Communications Commission Date: 2024-01-02 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Information Required by Section 2.911(d)(5)(ii) filing FCC ID: 2AAP8-LT310 Guoguang Electric Co., Ltd. (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Sincerely, ______________________ Signature Printed name: Mr Alan Song Title: Engineer

Guoguang Electric Co., Ltd. Attestation Statements Not Covered Equipment To: Federal Communications Commission Date: 2024-01-02 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Information Required by Section 2.911(d)(5)(i) filing FCC ID: 2AAP8-LT310 Guoguang Electric Co., Ltd. (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section § 2.903 of the FCC rules. Sincerely, ______________________ Signature Printed name: Mr Alan Song Title: Engineer

TCB Authority to Act as Agent Number: MS-0045317 Revision: 0 Effective date: Oct 8, 2021 Page 1 of 1 Guoguang Electric Co., Ltd. Authority to Act as Agent Date: 2024-01-02 TUV Rheinland of North America, Inc. 1279 Quarry Lane., Suite. A Pleasanton, CA 94566 To Whom It May Concern: I appoint TÜV Rheinland (Shenzhen) Co., Ltd. to act as our agent in the preparation of this application for equipment certification. I certify that 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 FCC or Industry Canada’s 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 our behalf, I acknowledge that all responsibility for complying with the terms and conditions for Certification, as specified by TUV Rheinland Group, still resides with Guoguang Electric Co., Ltd., No.8 Jinghu Road, Xinya Street, Huadu Reg, Guangzhou, Guangdong, China. For TCB applications, We certify that we are not subject to denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Further, no party, as defined in 47 CFR 1.2002 (b), to the application is subject to denial of federal benefits, that includes FCC benefits. Agency Agreement Date: 2024-01-02 Agreement is valid for 12 months from the above date. Sincerely, ______________________ Signature Printed name: Mr Alan Song Title: Engineer On behalf of Guoguang Electric Co., Ltd. Address: No.8 Jinghu Road, Xinya Street, Huadu Reg, Guangzhou, Guangdong, China.

MS-0044715 Page 1 of 1 Revision 1 Guoguang Electric Co., Ltd. Date: 2024-01-02 Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road, Columbia, MD 21046, USA Subject: Confidentiality Request for FCC ID: 2AAP8-LT310 Pursuant to FCC 47 CRF 0.457(d), the applicant requests that a part of the subject FCC/IC application be held confidential. Type of Confidentiality Requested Exhibit Short Term Permanent Block Diagrams Short Term Permanent External Photo Short Term Permanent Internal Photos *** Short Term Permanent Operation Description/Theory of Operation Short Term Permanent Schematics Short Term Permanent Test Setup*** Short Term Permanent Tune-Up Procedure Short Term Permanent User’s Manual*** Short Term Permanent Part List/ Antenna Gain Information Datasheet Guoguang Electric Co., Ltd. has spent substantial effort in developing this product and it is one of the first of its kind in industry. Having the subject information easily available to "competition" would negate the advantage they have achieved by developing this product. Not protecting the details of the design will result in financial hardship. Permanent Confidentiality: The applicant requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. (*** Exceptional case for Permanent Confidentiality for these Exhibits by PAG only). Short-Term Confidentiality: The applicant requests the exhibits selected above as short term confidential be withheld from public view for a period of 180 days from the date of the Grant of Equipment Authorization and prior to marketing. This is to avoid premature release of sensitive information prior to marketing or release of the product to the public. Applicant is also aware that they are responsible to notify TUV Rheinland in the event information regarding the product or the product is made available to the public. TUV Rheinland will then release the documents listed above for public disclosure pursuant to FCC Public Notice DA 04-1705. Sincerely, ______________________ Signature Printed name: Mr Alan Song Title: Engineer

Guoguang Electric Co., Ltd. Difference statement for Left & Right Earbuds We the undersigned hereby confirm that the Product Lenovo YOGA True Wireless Stereo Earbuds, Model: LT310, the left and right earbuds have the same mirror image, where the Left and Right circuit diagram, PCB layout, antenna and product size are the same. Confirmed by: Guoguang Electric Co., Ltd. Authorized Signature: Printed name: Alan Song Date: 2024/1/10

Label Location Due to the probe material and size of product, according to FCC KDB 784748 D01, the certification number are included in the user guide and packaging. Below is a screenshot of the screen from user guide and packaging. Instructions Label information: Packaging Label information:

Prüfbericht - Produkte Test Report - Products Prüfbericht-Nr.: Test report no.: CN23FJZD 003 Auftrags-Nr.: Order no.: 168455159 Seite 1 von 27 Page 1 of 27 Kunden-Referenz-Nr.: Client reference no.: N/A Auftragsdatum: Order date: 2023-12-04 Auftraggeber: Client: Guoguang Electric Co., Ltd. No.8 Jinghu Road, Xinya Street, Huadu Reg, Guangzhou, Guangdong, China Prüfgegenstand: Test item: Lenovo YOGA True Wireless Stereo Earbuds Bezeichnung / Typ-Nr.: Identification / Type no.: LT310 (Trademark: LENOVO) Auftrags-Inhalt: Order content: Test Report Prüfgrundlage: Test specification: FCC 47 CFR § 2.1093 IEEE Std 1528-2013 RSS-102 Issue 5: March 2015 IEC/IEEE 62209-1528: 2020 Published RF exposure KDB procedures Wareneingangsdatum: Date of sample receipt: 2023-12-13 Please refer to Photo Document Prüfmuster-Nr.: Test sample no: A003622699-014 Prüfzeitraum: Testing period: 2023-12-20 - 2023-12-20 Ort der Prüfung: Place of testing: TÜV Rheinland (Shenzhen) Co., Ltd. Prüflaboratorium: Testing laboratory: TÜV Rheinland (Shenzhen) Co., Ltd. Prüfergebnis*: Test result*: Pass geprüft von: tested by: genehmigt von: authorized by: Datum: Date: 2023-12-27 Ausstellungsdatum: Issue date: 2023-12-27 Stellung / Position: Sachverständige(r)/Expert Stellung / Position: Sachverständige(r)/Expert Sonstiges / Other: FCC ID: 2AAP8-LT310 IC: 9043A-LT310 HVIN: LT310 Zustand des Prüfgegenstandes bei Anlieferung: Condition of the test item at delivery: Prüfmuster vollständig und unbeschädigt Test item complete and undamaged * Legende: P(ass) = entspricht o.g. Prüfgrundlage(n) F(ail) = entspricht nicht o.g. Prüfgrundlage(n) N/A = nicht anwendbar N/T = nicht getestet * Legend: P(ass) = passed a.m. test specification(s) F(ail) = failed a.m. test specification(s) N/A = not applicable N/T = not tested Dieser Prüfbericht bezieht sich nur auf das o.g. Prüfmuster und darf ohne Genehmigung der Prüfstelle nicht auszugsweise vervielfältigt werden. Dieser Bericht berechtigt nicht zur Verwendung eines Prüfzeichens. This test report only relates to the above mentioned test sample. Without permission of the test center this test report is not permitted to be duplicated in extracts. This test report does not entitle to carry any test mark. TUV Rheinland (Shenzhen) Co., Ltd., 1601-1604, 17-18F, Tower A Building 2, Shenzhen International Innovation Valley, Dashi 1st Road, Xili Street, Xili Community, Nanshan District, Shenzhen 518052, P. R. China Mail: [email protected] · Web: www.tuv.com Lin Lin Hardy Suo Prüfbericht - Produkte Test Report - Products Prüfbericht-Nr.: CN23FJZD 003 Test report no.: Seite 2 von 27 Page 2 of 27 Anmerkungen Remarks 1 Alle eingesetzten Prüfmittel waren zum angegebenen Prüfzeitraum gemäß eines festgelegten Kalibrierungsprogramms unseres Prüfhauses kalibriert. Sie entsprechen den in den Prüfprogrammen hinterlegten Anforderungen. Die Rückverfolgbarkeit der eingesetzten Prüfmittel ist durch die Einhaltung der Regelungen unseres Managementsystems gegeben. Detaillierte Informationen bezüglich Prüfkonditionen, Prüfequipment und Messunsicherheiten sind im Prüflabor vorhanden und können auf Wunsch bereitgestellt werden. The equipment used during the specified testing period was calibrated according to our test laboratory calibration program. The equipment fulfils the requirements included in the relevant standards. The traceability of the test equipment used is ensured by compliance with the regulations of our management system. Detailed information regarding test conditions, equipment and measurement uncertainty is available in the test laboratory and could be provided on request. 2 Wie vertraglich vereinbart, wurde dieses Dokument nur digital unterzeichnet. Der TÜV Rheinland hat nicht überprüft, welche rechtlichen oder sonstigen diesbezüglichen Anforderungen für dieses Dokument gelten. Diese Überprüfung liegt in der Verantwortung des Benutzers dieses Dokuments. Auf Verlangen des Kunden kann der TÜV Rheinland die Gültigkeit der digitalen Signatur durch ein gesondertes Dokument bestätigen. Diese Anfrage ist an unseren Vertrieb zu richten. Eine Umweltgebühr für einen solchen zusätzlichen Service wird erhoben. As contractually agreed, this document has been signed digitally only. TUV Rheinland has not verified and unable to verify which legal or other pertaining requirements are applicable for this document. Such verification is within the responsibility of the user of this document. Upon request by its client, TUV Rheinland can confirm the validity of the digital signature by a separate document. Such request shall be addressed to our Sales department. An environmental fee for such additional service will be charged. 3 Prüfklausel mit der Note * wurden an qualifizierte Unterauftragnehmer vergeben und sind unter der jeweiligen Prüfklausel des Berichts beschrieben. Abweichungen von Prüfspezifikation(en) oder Kundenanforderungen sind in der jeweiligen Prüfklausel im Bericht aufgeführt. Test clauses with remark of * are subcontracted to qualified subcontractors and descripted under the respective test clause in the report. Deviations of testing specification(s) or customer requirements are listed in specific test clause in the report. 4 Die Entscheidungsregel für Konformitätserklärungen basierend auf numerischen Messergebnisen in diesem Prüfbericht basiert auf der "Null-Grenzwert-Regel" und der "Einfachen Akzeptanz" gemäß ILAC G8:2019 und IEC Guide 115:2021, es sei denn, in der auf Seite 1 dieses Berichts genannten angewandten Norm ist etwas anderes festgelegt oder vom Kunden gewünscht. Dies bedeutet, dass die Messunsicherheit nicht berücksichtigt wird und daher auch nicht im Prüfbericht angegeben wird. Zu weiteren Informationen bezueglich des Risikos durch diese Entscheidungsregel siehe ILAC G8:2019. The decision rule for statements of conformity, based on numerical measurement results, in this test report is based on the “Zero Guard Band Rule” and “Simple Acceptance” in accordance with ILAC G8:2019 and IEC Guide 115:2…

Text truncated - open the document above for the full version.

Prüfbericht - Produkte Test Report - Products Appendix A CN23FJZD 003 Page 1 of 2 Appendix A: SAR Plots of System Verification Prüfbericht - Produkte Test Report - Products Appendix A CN23FJZD 003 Page 2 of 2

Prüfbericht - Produkte Test Report - Products Appendix B CN23FJZD 003 Page 1 of 3 Appendix B: SAR Plots of SAR Measurement Prüfbericht - Produkte Test Report - Products Appendix B CN23FJZD 003 Page 2 of 3 Prüfbericht - Produkte Test Report - Products Appendix B CN23FJZD 003 Page 3 of 3

Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 1 of 31 Appendix C: Calibration Certificate for probe and Dipole Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 2 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 3 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 4 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 5 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 6 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 7 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 8 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 9 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 10 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 11 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 12 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 13 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 14 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 15 of 31

Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 16 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 17 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 18 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 19 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 20 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 21 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 22 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 23 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 24 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 25 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 26 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 27 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 28 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 29 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 30 of 31 Prüfbericht - Produkte Test Report - Products Appendix C CN23FJZD 003 Page 31 of 31

1 Antenna Part Specification Customer name： GuoGuang Project name： L03 Materialcategory： BT Antenna Version： V2.0 Date： 2023.12.25 2 Contents I：The report of passive data .................................................................................................... 3 II：3D Active test report of antenna ...................................................................................... 9 III：Matching circuit .............................................................................................................. 10 IV：Environmental treatment ................................................................................................. 11 V：Structure file ..................................................................................................................... 13 Change record Compile / change date Reason for change Changed content Version 2023.11.22 first edition first edition V1.0 2023.12.25 Antenna optimization Antenna optimization V2.0 3 I：The report of passive data Angilent E5071C VSWR(S11) parameter（L）： 4 VSWR(S11) parameter（R）： 5 Efficiency（L）： Efficiency（R）： 2400-2480 MHz （L） Frequency （MHz） Efficiency Efficiency (dB ) Gain (dBi) 2400 31.8% -5.0 -1.2 2410 33.0% -4.8 -1.1 2420 34.4% -4.6 -1.1 2430 33.3% -4.8 -1.2 2440 31.6% -5.0 -1.3 2450 32.2% -4.9 -1.2 2460 31.7% -5.0 -1.4 2470 33.0% -4.8 -1.1 2480 33.9% -4.7 -0.7 Average value 32.8% -4.8 -1.1 2400-2480 MHz （R） Frequency （MHz） Efficiency Efficiency (dB ) Gain (dBi) 2400 30.9% -5.1 -1.9 2410 30.3% -5.2 -1.9 2420 30.1% -5.2 -1.9 2430 29.0% -5.4 -1.9 2440 28.3% -5.6 -2.0 2450 27.3% -5.8 -2.1 2460 27.0% -6.2 -2.4 2470 26.2% -6.2 -2.1 2480 25.2% -6.3 -2.1 Average value 28.3% -5.7 -2.0 6 3D Antenna radiation pattern（L）: 3D Antenna radiation pattern（R）: 7 2D Antenna radiation pattern（L）: Theta=90° Phi=0° Phi=90° 8 2D Antenna radiation pattern（R）: Theta=90° Phi=0° Phi=90° 9 II：3D Active test report of antenna free space Channel TRP（dBm） TIS（dBm） L CH 0 5.9 -90.6 CH 39 6.1 -90.1 CH 78 6.3 -90.7 free space Channel TRP（dBm） TIS（dBm） R CH 0 5.7 -89.4 CH 39 5.9 -89.8 CH 78 5.4 -89.3 headform Channel TRP（dBm） TIS（dBm） L CH 0 1.5 -85.5 CH 39 2.0 -85.9 CH 78 2.2 -86.2 headform Channel TRP（dBm） TIS（dBm） R CH 0 1.5 -85.4 CH 39 1.9 -85.9 CH 78 2.3 -86.2 OTA Standard Chamber 10 III：Matching circuit L-matching circuit Number Value C4 NA R18 0Ω C9 2.2PF R-matching circuit Number Value C4 NA R18 0Ω C9 2.2PF 11 IV：Environmental treatment The environmental treatment and extension of the left ear horn cavity are illustrated as follows 12 The environmental treatment and extension of the right ear horn cavity are illustrated as follows 13 V：Structure file 14

Prüfbericht - Produkte Test Report - Products Prüfbericht-Nr.: Test report no.: CN23FJZD 002 Auftrags-Nr.: Order no.: 168455159 Seite 1 von 28 Page 1 of 28 Kunden-Referenz-Nr.: Client reference no.: N/A Auftragsdatum: Order date: 2023-12-04 Auftraggeber: Client: Guoguang Electric Co., Ltd. No.8 Jinghu Road, Xinya Street, Huadu Reg, Guangzhou, Guangdong, China Prüfgegenstand: Test item: Lenovo YOGA True Wireless Stereo Earbuds Bezeichnung / Typ-Nr.: Identification / Type no.: LT310 (Trademark: LENOVO) Auftrags-Inhalt: Order content: Test Report Prüfgrundlage: Test specification: CFR47 FCC Part 15: Subpart C Section 15.247 RSS-247 Issue 3 August 2023 RSS-Gen Issue 5 February 2021 Wareneingangsdatum: Date of sample receipt: 2023-12-06 Please refer to Photo Document Prüfmuster-Nr.: Test sample no: A003622699-004~016 A003616873-005,034 Prüfzeitraum: Testing period: 2023-12-13 - 2023-12-20 Ort der Prüfung: Place of testing: TÜV Rheinland (Shenzhen) Co., Ltd. Prüflaboratorium: Testing laboratory: TÜV Rheinland (Shenzhen) Co., Ltd. Prüfergebnis*: Test result*: Pass geprüft von: tested by: genehmigt von: authorized by: Datum: Date: 2023-12-27 Ausstellungsdatum: Issue date: 2023-12-27 Stellung / Position: Sachverständige(r)/Expert Stellung / Position: Sachverständige(r)/Expert Sonstiges / Other: FCC ID: 2AAP8-LT310 IC: 9043A-LT310 HVIN: LT310 Zustand des Prüfgegenstandes bei Anlieferung: Condition of the test item at delivery: Prüfmuster vollständig und unbeschädigt Test item complete and undamaged * Legende: P(ass) = entspricht o.g. Prüfgrundlage(n) F(ail) = entspricht nicht o.g. Prüfgrundlage(n) N/A = nicht anwendbar N/T = nicht getestet * Legend: P(ass) = passed a.m. test specification(s) F(ail) = failed a.m. test specification(s) N/A = not applicable N/T = not tested Dieser Prüfbericht bezieht sich nur auf da…

Text truncated - open the document above for the full version.