2BB8O-DS520Smart Bracelet

Shenzhen Lexqi Electronic Technology Co.,Ltd 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – EquipmentType Company name: Shenzhen Lexqi Electronic Technology Co.,Ltd Address: 12F, Building D, Huilongda Industrial Park, Shilong Community, Shiyan Street, Baoan District, Shenzhen, China Product Name: Smart Bracelet FCC ID: 2BB8O-DS520 Model(s): DS520, DS1314, DS11, DS12, DS13, DS10MINI, DS10MAX 2.911(d)(5)(i) EquipmentType We, [Shenzhen Lexqi Electronic Technology Co.,Ltd] (“the applicant”) certify that the equipment for which authorization is sought through certification is not:  Prohibited from receiving an equipment authorization pursuant to § 2.903; of the FCC rules.  Identified as an equipment type in the “Covered List”NOTE 1 Yours sincerely, Name: Yuzhou Du Date: Nov. 19, 2025 Title: Director Company name: Shenzhen Lexqi Electronic Technology Co.,Ltd Signature: NOTE 1 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Shenzhen Lexqi Electronic Technology Co.,Ltd 2.911 (d)(5)(ii) Applicant Attestation v1.3 Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: Shenzhen Lexqi Electronic Technology Co.,Ltd Address:12F, Building D, Huilongda Industrial Park, Shilong Community, Shiyan Street, Baoan District, Shenzhen, China Product Name: Smart Bracelet FCC ID: 2BB8O-DS520 Model(s): DS520, DS1314, DS11, DS12, DS13, DS10MINI, DS10MAX 2.911(d)(5)(ii) Applicant filing We, [Shenzhen Lexqi Electronic Technology Co.,Ltd] (“the applicant”) certify that, as of the date of the filing of the application, the applicant is not identified NOTE 1 on the “Covered List” NOTE 2 ,established pursuant to §1.50002 of this chapter,as an entity producing coveredcommunications equipment. Yours sincerely, Name: Yuzhou Du Date: Nov. 19, 2025 Title: Director Company name: Shenzhen Lexqi Electronic Technology Co.,Ltd Signature: NOTE 1 Delete option not applicable to this application. NOTE 2 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Shenzhen Lexqi Electronic Technology Co.,Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Nov. 19, 2025 Subject; Request for Confidentiality FCC ID: 2BB8O-DS520 To Whom It May Concern, Pursuant to the provisions of the Commission’s 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 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); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuantto 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, Signature: Shenzhen Lexqi Electronic Technology Co.,Ltd Name: Yuzhou Du Title: Director

Shenzhen Lexqi Electronic Technology Co.,Ltd Model Difference Declaration To Whom It May Concern, We, Shenzhen Lexqi Electronic Technology Co.,Ltd (Smart Bracelet); Trade Mark: N/A, ModelNumber: DS520, DS1314, DS11, DS12, DS13, DS10MINI, DS10MAX; All model’s the function, software and electric circuit are the same, only with a appearance, product color and model named different. Test sample model: DS520. Please contact me if you have any question. Signature: Date: Nov. 19, 2025 Name: Yuzhou Du Title: Director

Shenzhen Lexqi Electronic Technology Co.,Ltd Agent Authorization Company: Shenzhen Lexqi Electronic Technology Co.,Ltd Address: 12F,Building D,Huilongda Industrial Park,Shilong Community, Shiyan Street,Baoan District, Shenzhen, China Product Name:Smart Bracelet Model Number(s):DS520, DS1314, DS11, DS12, DS13, DS10MINI, DS10MAX Product Description: Smart Bracelet 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: Nov. 19, 2025 Name: Yuzhou Du Title: Director Company: Shenzhen Lexqi Electronic Technology Co.,Ltd

FCC ID LABEL: Ca. 2mm x 10mm Label Location 、 FCC ID: 2BB8O-DS520

FCC RF Exposure EUT Description: Smart Bracelet Model No.: DS520 FCC ID: 2BB8O-DS520 1. Limits According to KDB 447498 D01 General RF Exposure Guidance v06 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, Where: Result=P/D*√F F= the RF channel transmit frequency in GHz P=Maximum turn‐up power in mw D=Min. test separation distance in mm 2. Test Result of RF Exposure Evaluation Frequency (MHz) Output power (dBm) Tune Up Power (dBm) Max Tune Up power mW Min test separati on distance mm Result Limit SAR Test Exclusion 2440 1.37 1±1(2) 1.585 5 0.495 3.0 Pass Note: PK Output power= conducted power. Conducted power see the test report HK2510305901-E, antenna gain=2.02dBi Per KDB 447498 D01, when the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. The test exclusion threshold is 0.495 which is<= 3, SAR testing is not required. Note: Exclusion Thresholds Results=[(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f(GHz)] f(GHz) is the RF channel transmit frequency in GHz Distance=5mm

Page 1 of 43 Report No.: HK2510305901-E FCC Test Report Test Report On Behalf of Shenzhen Lexqi Electronic Technology Co.,Ltd For Smart Bracelet Model No.: DS520, DS1314, DS11, DS12, DS13, DS10MINI, DS10MAX FCC ID: 2BB8O-DS520 Prepared For: Shenzhen Lexqi Electronic Technology Co.,Ltd 12F, Building D, Huilongda Industrial Park, Shilong Community, Shiyan Street, Baoan District, Shenzhen, China Prepared By: Shenzhen HUAK Testing Technology Co., Ltd. 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Date of Test: Oct. 30, 2025 ~ Nov. 03, 2025 Date of Report: Nov. 03, 2025 Report Number: HK2510305901-E Page 2 of 43 Report No.: HK2510305901-E Test Result Certification Applicant’s Name ................... : Shenzhen Lexqi Electronic Technology Co.,Ltd Address .................................... : 12F, Building D, Huilongda Industrial Park, Shilong Community, Shiyan Street, Baoan District, Shenzhen, China Manufacturer's Name ............. : Shenzhen Lexqi Electronic Technology Co.,Ltd Address .................................... : 12F, Building D, Huilongda Industrial Park, Shilong Community, Shiyan Street, Baoan District, Shenzhen, China Product Description Trade Mark ................................. : N/A Product Name ............................ : Smart Bracelet Model and/or Type Reference .. : DS520, DS1314, DS11, DS12, DS13, DS10MINI, DS10MAX Standards ................................ : 47 CFR FCC Part 15 Subpart C 15.247 KDB 558074 D01 15.247 Meas Guidance v05r02 ANSI C63.10: 2020 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HUAK Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HUAK Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Date of Test .............................................. : Date (s) of Performance of Tests ............... : Oct. 30, 2025 ~ Nov. 03, 2025 Date of Issue ............................................. : Nov. 03, 2025 Test Result ................................................. : Pass Testing Engineer Len Liao Technical Manager Sliver Wan Authorized Signatory Jason Zhou Page 3 of 43 Report No.: HK2510305901-E Contents Page 1 Test Summary ................................................................................................................................................ 5 1.1 Test Description ......................................................................................................................................... 5 1.2 Measurement Uncertainty ......................................................................................................................... 6 1.3 Information of the Test Laboratory ............................................................................................................ 6 2 General Information ....................................................................................................................................... 7 2.1 General Description of EUT ...................................................................................................................... 7 2.2 Description of Test Conditions .................................................................................................................. 9 2.3 Description of Test Setup ........................................................................................................................ 10 2.4 Description of Support Units .................................................................................................................... 11 3 Equipments List for All Test Items ............................................................................................................. 12 4 Test Result .................................................................................................................................................... 13 4.1 Antenna Requirement.............................................................................................................................. 13 4.2 AC Conduction Emissions Measurement ................................................................................................ 14 4.3 Radiated Emissions Measurement .......................................................................................................... 18 4.4 Maximum Peak Output Power Measurement ......................................................................................... 27 4.5 Power Spectral Density ........................................................................................................................... 28 4.6 6dB Bandwidth ........................................................................................................................................ 31 4.7 Occupied Bandwidth ................................................................................................................................ 34 4.8 Band Edge ............................................................................................................................................... 35 4.9 Conducted Spurious Emissions .............................................................................................................. 37 5 Test Setup Photos of the EUT .................................................................................................................... 41 6 Photos of the EUT ........................................................................................................................................ 43 Page 4 of 43 Report No.: HK2510305901-E ** Modified History ** Revision Description Issued Date Remark Revision 1.0 Initial Test Report Release Nov. 03, 2025 Jason Zhou Page 5 of 43 Report No.…

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第1页共9页 天线规格书 AntennaSampleConfirmationFrom 供应商名称 VendorName 深圳健海通天线技术有限公司 Shenzhenkenhaitongantennatechnologyco,ltd 客户名称 CustomerName 样品名称 SampleName 蓝牙天线 SmartBracelet 产品型号 PartNumber DS520 样品规格 Specification 红色30.5*0.6mm 检验项目 InspectionItem 性能测试 Performance 外观检查 TotalAppearance 结构 structure 其它 Others 检验结果 Inspection Result 备注 Remark 品质审核 QAAudit 黄霞 工程审核 EngineerAudit 冯国庆 业务确认 Sales Confirm 黄金灵 13823389991 以下由客户填写 ThefollowingarefilledbyCustomer 客户意见 Customer Evaluation 客户签字/盖章 Signation/ Chapter byCustomer 日期/date: AntennaSampleConfirmationFrom 第2页共9页 AntennaTestReport 测试单位:深圳健海通天线技术有限公司 Testby：Shenzhenkenhaitongantennatechnologyco,ltd 材料 Material 电子线天线 Electronicwireantenna 天线类型 AntennaType MonopoleType 极化方式 Polarizationmode Linear 应用场景 Application 工作频段 Band 2400-2500MHz 驻波比 VSWR ≤1.5 功率 Power Max：2W 阻抗 Impedance 50Ω 增益 dBi 2.02 测试设备 TestEquipment HPE5071C、ShieldingRoom、3Dautomaticturntable AntennaDescription:： 1.Groundingprocessingandpicturedescription:no 2.Needtochangethemotherboardtomatch:no Testvoltage:3.6V,checktheantennacontactisgoodbeforetesting. TheRFcableoftheintegratedtesteriskeptinanaturalstateandcannotbe curled. Specification:testthespecifiedpowerlevel,allindicatorsmustconformtothe specifications. AntennaSampleConfirmationFrom 第3页共9页 1、AntennaSample 第4页共9页 3、AntennaMatchingCiruit Modify E01E02E03 NoNoNo AntennaSampleConfirmationFrom 第5页共9页 4.1S11data Frequency（MH Z ） 240024502483 standing- waveratio 1.341.551.68 AntennaSampleConfirmationFrom 第6页共9页 5.1Antennapassivegainandefficiency AntennaSampleConfirmationFrom 第9页共9页 Address12F,BuildingD1,HuilongdaIndustrialPark,Shilongzai Community,ShiyanStreet,BaoanDistrict,Shenzhen AntennaSampleConfirmationFrom

Test Model: DS520 Radiated Emission AC Conducted Emission RF Conducted Emission