2BEGY-VVABC-ULTRA2SMART WATCH

1/1 US Agent for Service of ProcessLETTER OF ATTESTATION TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 US Agent for Service of Process: Company Name: THREE STONES MEDIA LLC FRN: 0033401761 Contact Name: Sijie Zhang Address: 1200 Broadway St. APT 329, Los Angeles, CA90015 Telephone No: +1 267 909 3692 Email: [email protected] Applicant: Company name: Shenzhen Dongzhi Technology Co., Ltd. Product Description: SMART WATCH Grantee code: 2BEGY FCC ID: 2BEGY-VVABC-ULTRA2 FRN: 0034723833 Contact Name: Zeng YongGuang Address: 4th Floor, Building 1, Zhuangbian Estate Industrial Park, Hezhou Community, Hangcheng Street, Bao'an District, Shenzhen, China Telephone No: 13798816218 Email: [email protected] [Shenzhen Dongzhi Technology Co., Ltd.] certifies that, as of the date of this filing of the application with the TCB, [THREE STONES MEDIA LLC] is our designated US agent for service of process for the above referenced FCC ID. [Shenzhen Dongzhi Technology Co., Ltd.] accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclus ion of any commission related proceeding involving equipment. [THREE STONES MEDIA LLC] accepts, as of the date of the filing of the application, the obligation of the designated US agent for service of process for the above reference FCC ID. The US Agent for Service of Process is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. The Applicantis aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. 1/1 Date: 19/03/2024 Applicant’s Name: Zeng YongGuang US Agent’s Name: Sijie Zhang Title:manager Title: President Signature Signature

C5266091_X24_Ed.2 1/1 “Attestation Statements” TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 The Commission adopted rules that prohibit equipment authorization for “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List 1 , which is periodically updated. See the Covered List for more details. This Attestation Statement is to confirm that we follow the Section 2.911(d)(5)(i)-(ii) Applicant Company name: Shenzhen Dongzhi Technology Co., Ltd. Grantee code: 2BEGY FCC ID: 2BEGY-VVABC-ULTRA2 Contact Name: Zeng YongGuang Address: 4th Floor, Building 1, Zhuangbian Estate Industrial Park, Hezhou Community, Hangcheng Street, Bao'an District, Shenzhen, China Telephone No: 13798816218 Fax No: N/A Email: [email protected] FRN: 0034723833 i. [Shenzhen Dongzhi Technology 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. The applicant must sign this certification. ii. [Shenzhen Dongzhi Technology Co., Ltd.] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not (as a specifically named entity or any of its subsidiaries or affiliates) identified on the Covered List as an entity producing “covered” equipment. Theapplicantmustsignthiscertification. Shenzhen Dongzhi Technology Co., Ltd. certifies that, as of the date of the filing of theapplication, the applicant is notidentified on the Covered List as an entity producing “covered”equipment. Date: 29/03/2024 Applicant’s Name: Zeng YongGuang Title: Manager Signature 1 The Commission’s Covered List is published by the Public Safety and Homeland Security Bureau and posted on the Commission’s website. This Covered List, which is periodically updated, identifies particular equipment, produced by particular entities, that constitutes “covered” equipment. https://www.fcc.gov/supplychain/coveredlist

Shenzhen Dongzhi Technology Co., Ltd. Family models declaration letter. 3/29/2024 We Company: Shenzhen Dongzhi Technology Co., Ltd. Address: 4th Floor, Building 1, Zhuangbian Estate Industrial Park, Hezhou Community, Hangcheng Street, Bao'an District, Shenzhen, China Product: Smartwatch Model Name: AIVV9 ULTRA2 Family Model: AIVV9 PRO+ FCC ID: 2BEGY-VVABC-ULTRA2 All models have the same circuit and RF module, except for the Keying circuit ,shape and color of the shell. We (Shenzhen Dongzhi Technology Co., Ltd.) hereby state that all the models are electrical identical including the same software parameter and hardware design (i.e., circuit design, PCB Layout, RF module/circuit, antenna type(s) and antenna location, components on PCB, etc.), same mechanical structure and design (including product enclosure, materials, etc.), except for the Keying circuit ,shape and color of the shell. Thanks Sincerely, Signature [Name] Zeng YongGuang [Title] manager Mail:[email protected]

C5266091_X8_Ed.1 1/1 Letter of Authorization < Shenzhen Dongzhi Technology Co., Ltd. > Company: Shenzhen Dongzhi Technology Co., Ltd. Address: 4th Floor, Building 1, Zhuangbian Estate Industrial Park, Hezhou Community, Hangcheng Street, Bao'an District, Shenzhen, China Product Name: SMART WATCH Model Number: AIVV9 ULTRA2, AIVV9 PRO+ FCC Identifier: 2BEGY-VVABC-ULTRA2 We authorize LGAI Technological Center S.A., Ronda de la Font delCarme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Zeng YongGuang Date: 29/03/2024 Title: Manager Signature of applicant:

C5266091_X10_Ed.2 1/1 < Shenzhen Dongzhi Technology Co., Ltd. > Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 19/03/2024 Subject: Request for Confidentiality FCC ID: 2BEGY-VVABC-ULTRA2 To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location Attestation Statement External Photos Block Diagram Schematics Test Report Test Setup Photos User’s Manual NOTE 1 Internal Photos NOTE 1 Parts List / Tune Up / BOM List RF Exposure Info Operational Description Cover Letter(s) FCC Software Security Requirements for UNII devices NOTE 1: Long-Term Confidentiality may be permitted under special conditions (See II. LONG-TERM CONFIDENTIALITY, Section 3 of KDB 726920, use last in force) NOTE 2: Short-Term Confidentiality can be requested for a maximum of 180 days from the date of the grant. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. In case of short-term Confidentiality, the applicant requests the exhibits selected above are withheld from public view for a period of _180_ days from the date of the Grant of Equipment Authorization and prior to marketing. C5266091_X10_Ed.2 1/1 It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Zeng YongGuang Title: Manager

FCC ID: 2BEGY-VVABC-ULTRA2 Portable device According to §15.247(e)(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. According to KDB447498 D01 General RF Exposure Guidance V06 The 1-g SAR 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 • The result is rounded to one decimal place for comparison When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. BT3.0 Modulation Channel Freq. (GHz) Conduct ed power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculation SAR Exclusion threshold SAR test exclusion 2.402 1.88 1.542±1 3 2.00<50.618473.00YES 2.441 1.93 1.562±1 3 2.00<50.623473.00YES 2.480 2.12 1.632±1 3 2.00<50.628433.00YES 2.402 4.96 3.134.5±1 5.5 3.55<51.099813.00YES 2.441 3.57 2.283.5±1 4.5 2.82<50.880673.00YES 2.480 3.06 2.023.5±1 4.5 2.82<50.887683.00YES 2.402 5.5 3.555±1 6 3.98<51.234003.00YES 2.441 4.17 2.614.5±1 5.5 3.55<51.108703.00YES 2.480 3.9 2.454.5±1 5.5 3.55<51.117523.00YES GFSK π/4- DQPSK 8-DQPSK BLE Modulation Channel Freq. (GHz) Conduct ed power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculation SAR Exclusion threshold SAR test exclusion 2.402 2.02 1.592±132.00<50.618473.00YES 2.440 1.97 1.572±132.00<50.623343.00YES 2.480 2.11.622±132.00<50.628433.00YES 2.402 1.99 1.582±132.00<50.618473.00YES 2.440 2 1.582±132.00<50.623343.00YES 2.480 2.12 1.632±132.00<50.628433.00YES BLE-1M BLE-2M Conclusion: For the max result : 1.23400 ≤ 3.0 for 1g SAR, SAR is not required. Signature: Date: 2024-03-15 NAME AND TITLE (Please print or type): Alex li /Manager COMPANY (Please print or type): Shenzhen NTEK Testing Technology Co., Ltd./ 1/F, Building E, Fenda Science Park, Sanwei Community, Xixiang Street Bao’an District, Shenzhen P.R. China.

让无线电波助力未来生活 爱宝&杻飞 1 Project nameYL0001-3 Client 动致 Antenna nameBT Testing personnelSEAN Contact information 15813808853 Date2023/12/14 Test equipmentKeysight 5071C Item information Prototype statusproduce Mainboard258-525AM Bluetooth nameVVABC Ultra2 Else YL0001-3 BT Antenna performance report z+ Y+ X+ z+ Y+ X+ Test location of the object under test Test location of the object under test Location of Bluetooth antenna L20±0.5mm Fre(GHz)Return loss(dB)SWR 2.4-4.14.3 2.5-4.93.6 Frequenc y/Mhz Efficiency / % MaxGain/ dBi 24005.86-3.8 24105.82-3.84 24205.7-4.02 24305.85-3.81 24405.9-3.67 24505.81-3.53 24605.78-3.53 24705.92-3.49 24805.73-3.64 24905.92-3.48 25005.85-3.41 Phi 0 2DPhi 90 2DTheta 90 2D 3D Radition pattern 2D Radition pattern Antenna efficiency and gain Bit numberMatched value A1No modification A2NC A3NC Test site: Mei Sheng Chuang Valley ground parking lot test mobile phone iphone12 Wearer test position measured data Face to face devices to find your phone 30m Look for the phone with your back to it 30m Play music face to face28m Play music from your back25m Bluetooth antenna performance to meet customer use

Report No.: S23121100905002 Version.1.3 Page 1 of 72 RADIO TEST REPORT FCC ID: 2BEGY-VVABC-ULTRA2 Product: SMART WATCH Trade Mark: Model No.: AIVV9 ULTRA2 Family Model: AIVV9 PRO+ Report No.: S23121100905002 Issue Date: Jan 09, 2024 Prepared for Shenzhen Dongzhi Technology Co., Ltd. 4th Floor, Building 1, Zhuangbian Estate Industrial Park, Hezhou Community, Hangcheng Street, Bao'an District, Shenzhen, China Prepared by Shenzhen NTEK Testing Technology Co., Ltd. 1/F, Building E, Fenda Science Park, Sanwei Community,Xixiang Street Bao’an District, Shenzhen 518126 P.R. China Tel. 400-800-6106, 0755-2320 0050, 0755-2320 0090 Website: http://www.ntek.org.cn Report No.: S23121100905002 Version.1.3 Page 2 of 72 TABLE OF CONTENTS 1 TEST RESULT CERTIFICATION ...................................................................................................................... 4 2 SUMMARY OF TEST RESULTS ......................................................................................................................... 5 3 FACILITIES AND ACCREDITATIONS ............................................................................................................. 6 3.1 FACILITIES..................................................................................................................................................... 6 3.2 LABORATORY ACCREDITATIONS AND LISTINGS ................................................................................. 6 3.3 MEASUREMENT UNCERTAINTY ............................................................................................................... 6 4 GENERAL DESCRIPTION OF EUT .................................................................................................................. 7 5 DESCRIPTION OF TEST MODES ..................................................................................................................... 9 6 SETUP OF EQUIPMENT UNDER TEST ......................................................................................................... 10 6.1 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM ..................................................................... 10 6.2 SUPPORT EQUIPMENT............................................................................................................................... 11 6.3 EQUIPMENTS LIST FOR ALL TEST ITEMS .............................................................................................. 12 7 TEST REQUIREMENTS .................................................................................................................................... 14 7.1 CONDUCTED EMISSIONS TEST ............................................................................................................... 14 7.1.1 Applicable Standard .................................................................................................................................. 14 7.1.2 Conformance Limit ................................................................................................................................... 14 7.1.3 Measuring Instruments............................................................................................................................. 14 7.1.4 Test Configuration .................................................................................................................................... 14 7.1.5 Test Procedure ........................................................................................................................................... 14 7.1.6 Test Results ................................................................................................................................................ 15 7.2 RADIATED SPURIOUS EMISSION ............................................................................................................ 17 7.2.1 Applicable Standard .................................................................................................................................. 17 7.2.2 Conformance Limit ................................................................................................................................... 17 7.2.3 Measuring Instruments............................................................................................................................. 18 7.2.4 Test Configuration .................................................................................................................................... 18 7.2.5 Test Procedure ........................................................................................................................................... 19 7.2.6 Test Results ................................................................................................................................................ 20 7.3 6DB BANDWIDTH ....................................................................................................................................... 26 7.3.1 Applicable Standard .................................................................................................................................. 26 7.3.2 Conformance Limit ................................................................................................................................... 26 7.3.3 Measuring Instruments............................................................................................................................. 26 7.3.4 Test Setup .................................................................................................................................................. 26 7.3.5 Test Procedure ........................................................................................................................................... 26 7.3.6 Test Results ................................................................................................................................................ 26 7.4 DUTY CYCLE ........................…

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