2BEXB-TK20Smart ring

Shen zhen Lanyu Optical Electronics Co.,Ltd. 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – EquipmentType Company name: Shen zhen Lanyu Optical Electronics Co.,Ltd. Address: 409, Building 14, Jing Fa smart manufacturing industrial park, NO.62 Nanchang Road, Bao'an District, Shenzhen City, Guangdong Province, China Product Name: Smart ring FCC ID: 2BEXB-TK20 Model(s):TK20, R5, R7, R9, KR2, R10, RR20, R30, VR1, R8, R18, R40 2.911(d)(5)(i) EquipmentType We, [Shen zhen Lanyu Optical Electronics 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: Dec. 12, 2025 Signature: Title and Company name:PM/ Shen zhen Lanyu Optical Electronics Co.,Ltd. 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

Shen zhen Lanyu Optical Electronics Co.,Ltd. 2.911 (d)(5)(ii) Applicant Attestation v1.3 Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: Shen zhen Lanyu Optical Electronics Co.,Ltd. Address: 409, Building 14, Jing Fa smart manufacturing industrial park, NO.62 Nanchang Road, Bao'an District, Shenzhen City, Guangdong Province, China Product Name: Smart ring FCC ID: 2BEXB-TK20 Model(s):TK20, R5, R7, R9, KR2, R10, RR20, R30, VR1, R8, R18, R40 2.911(d)(5)(ii) Applicant filing We, [Shen zhen Lanyu Optical Electronics 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: Dec. 12, 2025 Signature: Title and Company name:PM/ Shen zhen Lanyu Optical Electronics Co.,Ltd. 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

Shen zhen Lanyu Optical Electronics Co.,Ltd. Agent Authorization Company: Shen zhen Lanyu Optical Electronics Co.,Ltd. Address: 409, Building 14, Jing Fa smart manufacturing industrial park, NO.62 Nanchang Road, Bao'an District, Shenzhen City, Guangdong Province, China Product Name: Smart ring Model Number(s): TK20, R5, R7, R9, KR2, R10, RR20, R30, VR1, R8, R18, R40 Product Description: Smart ring 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. Si gnature: Date: Dec. 12, 2025 Name: Yuzhou Du Title: PM Company: Shen zhen Lanyu Optical Electronics Co.,Ltd.

Shen zhen Lanyu Optical Electronics Co.,Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date:Dec. 12, 2025 Subject; Request for Confidentiality FCC ID:2BEXB-TK20 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 Tune-up Procedure Software security requirement 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: Name: Yuzhou Du Title: PM

Shen zhen Lanyu Optical Electronics Co.,Ltd. Model Difference Declaration To Whom It May Concern, We, Shen zhen Lanyu Optical Electronics Co.,Ltd. (Smart ring); Trade Mark:N/A, ModelNumber: TK20, R5, R7, R9, KR2, R10, RR20, R30, VR1, R8, R18, R40; All model's the function, software and electric circuit are the same, only with shell size, product color and model named different.Test sample model: TK20. Please contact me if you have any question. Signature: Date: Dec. 12, 2025 Name: Yuzhou Du Title: PM

LABEL: Ca: 1mm x 10mm Label Location FCC ID: 2BEXB-TK20

FCC RF Exposure Pr oduct Name: Smart ring FCC ID: 2BEXB‐TK20 Model(s):TK20 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 chann el, 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 Exposur e Evaluation Frequency (MHz) Output power (dBm) Tune Up Power (dBm) Max Tune Up power dBm/mW Min test separatio n distance mm Result Limit SA R Test Exclusion 2480 ‐2.05 ‐2±1 ‐1/0.794 5 0.250 3.0 Pass Note: PK Output power= conducted power. Conducted power see the test report HK2509155270‐E, antenna gain=0dBi Pe r KDB 447498 D01, when the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine RF Exposure test exclusion. The test exclusion threshold is 0.250 which is<= 3, RF Exposure 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

ShenzhenQingheIndustrialCo.,Ltd. Address：Room202,No.7,JiujiuIndustrialRoad,ShatouCommunity,ShajingStreet, Bao'anDistrict,ShenzhenCity,GuangdongProvince,China 天线规格承认书 AntennaSpecificationforApproval 客户名称 CustomerName：深圳市维亿魄科技有限公司 产品名称： ProductName：2.4GPCB天线全长14.4mm 客户型号： ProductName:V02_MB_V2.0 产品料号： PartNO.: 制表： WriteBy：马晓兰 日期： IssuedDate:2025-4-18 客户: 工程R&DDept 采购BusinessDept 承认ApprovedBy QingheIndustrial 研发R&DDept 工程EngineerDept 审核Approval ProductSpecification A.ElectricalCharacteristics Frequency2400MHz ~2500MHzVSWR<3.0 Efficiency>30% Impedance50 OhmPolarization LineGain 1.5DBi B.Material&MechanicalCharacteristics MaterialofRadiatorCu CableTypeFPC0.15MM黑 ConnectorType:NO Dimension C.Environmental OperationTemperature-30°C~+80 °CStorageTemperature-30°C~+ 85°C TestEquipment&Conditions 1. NetworkAnalyzers : Agilent8753D5071C 2.CommunicationsTestSet: AgilentE5525C 3.3DChamberTestSystem Effiency&Gain Effiency&Gain 2.40-0.00 2.440-0.11 2.48-0.13 Phi02D: Phi902D: Theta902D: Efficiency: Gain: 3DEtotal:

Page 1 of 43 Report No.: HK2509155270-E FCC Test Report Test Report On Behalf of Shen zhen Lanyu Optical Electronics Co.,Ltd. For Smart ring Model No.:TK20, R5, R7, R9, KR2, R10, RR20, R30, VR1, R8, R18, R40 FCC ID: 2BEXB-TK20 Prepared For: Shen zhen Lanyu Optical Electronics Co.,Ltd. 409, Building 14, Jing Fa smart manufacturing industrial park, NO.62 Nanchang Road, Bao'an District, Shenzhen City, Guangdong Province, 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: Sept. 15, 2025 ~ Oct. 10, 2025 Date of Report: Oct. 10, 2025 Report Number: HK2509155270-E Page 2 of 43 Report No.: HK2509155270-E Test Result Certification Applicant’s Name ................... : Shen zhen Lanyu Optical Electronics Co.,Ltd. Address .................................... : 409, Building 14, Jing Fa smart manufacturing industrial park, NO.62 Nanchang Road, Bao'an District, Shenzhen City, Guangdong Province, China Manufacturer's Name ............. : Shen zhen Lanyu Optical Electronics Co.,Ltd. Address .................................... : 409, Building 14, Jing Fa smart manufacturing industrial park, NO.62 Nanchang Road, Bao'an District, Shenzhen City, Guangdong Province, China Product Description Trade Mark ................................. : N/A Product Name ............................ : Smart ring Model and/or Type Reference .. : TK20, R5, R7, R9, KR2, R10, RR20, R30, VR1, R8, R18, R40 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 ............... : Sept. 15, 2025 ~ Oct. 10, 2025 Date of Issue ............................................. : Oct. 10, 2025 Test Result ................................................. : Pass Testing Engineer Len Liao Technical Manager Sliver Wan Authorized Signatory Jason Zhou Page 3 of 43 Report No.: HK2509155270-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 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 ....................................................................................................................................... 41 6 Photos of the EUT ........................................................................................................................................ 43 Page 4 of 43 Report No.: HK2509155270-E ** Modified History ** Revision Descrip…

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Model No.: TK20 Radiated Emission AC Conducted Emission RF Conducted Emission