2BKDL-Z88Outdoor sports Bluetooth call smartwatch

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Shenzhen Jinruihuan Technology Co., Ltd Room 401, Building H, No. 23 Huohuiluo Road, Zhangkengjing Community, Guanhu Street Longhua District, Shenzhen, China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2026/03/25 U.S. Agent Designation Shenzhen Jinruihuan Technology Co., Ltd acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought (FCC ID: 2BKDL-Z88): Name and company of U.S. agent: GLOCERTS TECHNOLOGY INC Physical U.S. address of agent: 19784 SUNKISSED RIDGE DR RIVERSIDE, CA 92507 United States FRN of U.S. agent: 0036339737 Phone of U.S. agent: (626) 588-8039 Email address of U.S. agent: [email protected] GLOCERTS TECHNOLOGY INC acknowledges their obligation to accept service of process on behalf of Shenzhen Jinruihuan Technology Co., Ltd with the FRN [0035823806] accepts its obligation 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. By signing this form, we confirm the above and that we are aware of the application requirements listed under § 2.911(d)(7). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB. An expiration date for this letter does not exist. Sincerely, Signature Liu Wei Manager Shenzhen Jinruihuan Technology Co., Ltd Signature Huiying Fan Director GLOCERTS TECHNOLOGY INC 48_[mo del] US_Agent_2.911(d)(7) - U, V0 5

FCC ID:2BKDL-Z88 External Photos of the EUT FCC ID:2BKDL-Z88 FCC ID:2BKDL-Z88

Label and Location Size: L: 4.0cm*W: 3.0cm Label and Location FCC ID : 2BKDL-Z88

FCC ID:2BKDL-Z88 Internal Photos of the EUT BLE ANT FCC ID:2BKDL-Z88 FCC ID:2BKDL-Z88

Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn RF Exposure evaluation Report Reference No. ..................... : FCC ID............................................. : CTA26031201302 2BKDL-Z88 Compiled by ( position+printed name+signature) . : File administrators Zoey Cao Supervised by ( position+printed name+signature) . : Project Engineer Ace Chai Approved by ( position+printed name+signature) . : RF Manager Eric Wang Date of issue .................................... : Mar. 18, 2026 Testing Laboratory Name .............. : Shenzhen CTA Testing Technology Co., Ltd. Address............................................ : Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Applicant’s name ............................ : Shenzhen Jinruihuan Technology Co., Ltd Address............................................ : Room 401, Building H, No. 23 Huohuiluo Road, Zhangkengjing Community, Guanhu Street Longhua District, Shenzhen, China Standard ........................................... : 47CFR §1.1310 47CFR §2.1093 KDB447498 D01 General RF Exposure Guidance v06 Shenzhen CTA Testing Technology Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purpses as long as the Shenzhen CTA Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen CTA 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. Test item description ..................... : Outdoor sports Bluetooth call smartwatch Trade Mark ....................................... : N/A Manufacturer .................................... : Shenzhen Jinruihuan Technology Co., Ltd Model/Type reference ...................... : Z88 Listed Models ................................... : N/A Ratings ............................................. : Input: 5V130mA Battery: 3.8V 220mAh 0.836Wh Result ............................................... : PASS Report No.: CTA26031201302 Page 2 of 8 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn T E S T R E P O R T Equipment under Test : Outdoor sports Bluetooth call smartwatch Model /Type : Z88 Listed Models : N/A Applicant : Shenzhen Jinruihuan Technology Co., Ltd Address : Room 401, Building H, No. 23 Huohuiluo Road, Zhangkengjing Community, Guanhu Street Longhua District, Shenzhen, China Manufacturer : Shenzhen Jinruihuan Technology Co., Ltd Address : Room 401, Building H, No. 23 Huohuiluo Road, Zhangkengjing Community, Guanhu Street Longhua District, Shenzhen, China Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: CTA26031201302 Page 3 of 8 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Contents 1 TEST STANDARDS ............................................................................................................ 4 2 SUMMARY .......................................................................................................................... 5 2.1 General Remarks ..................................................................................................... 5 2.2 Product Description ................................................................................................. 5 2.3 Special Accessories ................................................................................................. 5 2.4 Modifications ............................................................................................................ 5 3 TEST ENVIRONMENT ....................................................................................................... 6 3.1 Address of the test laboratory .................................................................................. 6 3.2 Test Facility .............................................................................................................. 6 3.3 Statement of the measurement uncertainty ............................................................. 6 4 Test limit .............................................................................................................................. 7 4.1 Requirement ............................................................................................................ 7 4.2 Conducted Power Results ....................................................................................... 7 4.3 Manufacturing tolerance .......................................................................................... 7 4.4 Evaluation Result ..................................................................................................... 8 4.5 Simultaneous Transmission for SAR Exclusion ...................................................... 8 5 Conclusion ........................................................................................................................... 8 Report No.: CTA26031201302 Page 4 of 8 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-7…

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天线规格承认书 Antenna Specification for Approval 客户名称 CustomerName：深圳市魔样科技有限公司 产品名称： ProductName： 2.4G天线 全长25mm红色 客户型号： ProductName: 产品料号： Part NO.: C10- 35- 2.5 制 表 ： WriteBy：庄杰彬 日 期： IssuedDate: 2021- 10-08 客 户: 工程R& D Dept 采购Business Dept 承认 Approved By 一线通 研发R& D Dept 工程 Engineer Dept 审核 Approval 庄彩虹 庄杰彬 庄杰彬 Shenzhen Yixiantong Cable Co., Ltd. Address: Building 21, Wanfeng 98 Industrial City, Shajing Street, Bao'an District, Shenzhen, China Product Specification A. ElectricalCharacteristics Frequency 2400MHz ~2500MHz VSWR<3.0 Efficiency >30% Impedance 50 Ohm Polarization Line Gain 0.17DBi B. Material & MechanicalCharacteristics Material of Radiator Cu Cable Type 1.0 19P 红 Connector Type : NO Dimension C. Environmental Operation Temperature - 3 0 °C ~ + 8 0 °CStorage Temperature - 30 °C~+ 8 5 °C Test Equipment & Conditions 1. NetworkAnalyzers: Agilent 8753D 5071C 2. Communications TestSet: Agilent E5525C 3. 3D Chamber TestSystem Effiency& Gain Radiation Pattern: i i i i i i i i i i i i i i i i

Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn FCC PART 15 SUBPART C TEST REPORT FCC PART 15.247 Report Reference No. ...................: FCC ID. ......................................... : CTA26031201301 2BKDL-Z88 Compiled by ( position+printed name+signature) : File administrators Zoey Cao Supervised by ( position+printed name+signature) : Project Engineer Ace Chai Approved by ( position+printed name+signature) : RF Manager Eric Wang Date of issue ...................................: Mar. 18, 2026 Testing Laboratory Name .............: Shenzhen CTA Testing Technology Co., Ltd. Address ..........................................: Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Applicant’s name...........................: Shenzhen Jinruihuan Technology Co., Ltd Address ...........................................: Room 401, Building H, No. 23 Huohuiluo Road, Zhangkengjing Community, Guanhu Street Longhua District, Shenzhen, China Test specification ......................... : Standard ..........................................: FCC Part 15.247 Shenzhen CTA Testing Technology Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen CTA Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen CTA 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. Equipment description ................ : Outdoor sports Bluetooth call smartwatch Trade Mark ......................................: N/A Manufacturer ...................................: Shenzhen Jinruihuan Technology Co., Ltd Model/Type reference .....................: Z88 Listed Models ..................................: N/A Modulation ......................................: GFSK Frequency .......................................: From 2402MHz to 2480MHz Ratings ............................................: Input: 5V130mA Battery: 3.8V 220mAh 0.836Wh Result ..............................................: PASS Report No.: CTA26031201301 Page 2 of 35 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn T E S T R E P O R T Equipment under Test : Outdoor sports Bluetooth call smartwatch Model /Type : Z88 Listed Models : N/A Applicant : Shenzhen Jinruihuan Technology Co., Ltd Address : Room 401, Building H, No. 23 Huohuiluo Road, Zhangkengjing Community, Guanhu Street Longhua District, Shenzhen, China Manufacturer : Shenzhen Jinruihuan Technology Co., Ltd Address : Room 401, Building H, No. 23 Huohuiluo Road, Zhangkengjing Community, Guanhu Street Longhua District, Shenzhen, China Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: CTA26031201301 Page 3 of 35 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Contents 1 TEST STANDARDS ...................................................................................................................................... 4 2 SUMMARY .................................................................................................................................................... 5 2.1 General Remarks .............................................................................................................................. 5 2.2 Product Description* .......................................................................................................................... 5 2.3 Equipment Under Test ....................................................................................................................... 5 2.4 Short description of the Equipment under Test (EUT) ...................................................................... 5 2.5 EUT configuration .............................................................................................................................. 5 2.6 EUT operation mode ......................................................................................................................... 5 2.7 Block Diagram of Test Setup ............................................................................................................. 6 2.8 Related Submittal(s) / Grant (s) ......................................................................................................... 6 2.9 Modifications ...................................................................................................................................... 6 3 TEST ENVIRONMENT ................................................................................................................................. 7 3.1 Address of the test laboratory ........................................................................................................... 7 3.2 Test Facility........................................................................................................................................ 7 3.3 Environmental conditions .............................................................................................................…

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1 FCC Appendix RF Test Data for BLE FCC ID : 2BKDL-Z88 Company : Shenzhen Jinruihuan Technology Co., Ltd EUT : Outdoor sports Bluetooth call smartwatch Model Number : Z88 Report No. : CTA26031201301 Reviewed By : Eric Wang 2 Appendix A: DTS Bandwidth Test Result TestMode Antenna Freq(MHz) DTS BW [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict BLE_1M Ant1 2402 0.648 2401.688 2402.336 0.5 PASS 2440 0.648 2439.684 2440.332 0.5 PASS 2480 0.644 2479.692 2480.336 0.5 PASS 3 Test Graphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 4 5 Appendix B: Occupied Channel Bandwidth Test Result TestMode Antenna Freq(MHz) OCB [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict BLE_1M Ant1 2402 1.0078 2401.5165 2402.5243 --- --- 2440 1.0053 2439.5205 2440.5258 --- --- 2480 1.0031 2479.5214 2480.5245 --- --- 6 Test Graphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 7 8 Appendix C: Maximum conducted output power Test Result Peak TestMode Antenna Freq(MHz) Conducted Peak Powert[dBm] Conducted Limit[dBm] Verdict BLE_1M Ant1 2402 -0.06 ≤30 PASS 2440 -0.39 ≤30 PASS 2480 -0.47 ≤30 PASS 9 Appendix D: Maximum power spectral density Test Result TestMode Antenna Freq(MHz) Result[dBm/3kHz] Limit[dBm/3kHz] Verdict BLE_1M Ant1 2402 -15.54 ≤8.00 PASS 2440 -16.46 ≤8.00 PASS 2480 -16.15 ≤8.00 PASS 10 Test Graphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 11 12 Appendix E: Band edge measurements Test Result TestMod e Antenn a ChNam e Freq(MHz ) RefLevel[dBm ] Result[dBm ] Limit[dBm ] Verdic t BLE_1M Ant1 Low 2402 -0.60 -54.05 ≤-20.6 PASS High 2480 -0.96 -51.73 ≤-20.96 PASS 13 Test Graphs BLE_1M_Ant1_Low_2402 BLE_1M_Ant1_High_2480 14 Appendix F: Conducted Spurious Emission Test Result TestMode Antenna Freq(MHz) FreqRange [MHz] RefLevel [dBm] Result[dBm] Limit[dBm] Verdict BLE_1M Ant1 2402 Reference -1.21 -1.21 --- PASS 30~1000 -1.21 -67.99 ≤-21.21 PASS 1000~26500 -1.21 -42.64 ≤-21.21 PASS 2440 Reference -1.46 -1.46 --- PASS 30~1000 -1.46 -68.2 ≤-21.46 PASS 1000~26500 -1.46 -41.36 ≤-21.46 PASS 2480 Reference -1.79 -1.79 --- PASS 30~1000 -1.79 -68.63 ≤-21.79 PASS 1000~26500 -1.79 -43.43 ≤-21.79 PASS 15 Test Graphs BLE_1M_Ant1_2402_0~Reference BLE_1M_Ant1_2402_30~1000 BLE_1M_Ant1_2402_1000~26500 16 BLE_1M_Ant1_2440_0~Reference BLE_1M_Ant1_2440_30~1000 17 BLE_1M_Ant1_2440_1000~26500 BLE_1M_Ant1_2480_0~Reference BLE_1M_Ant1_2480_30~1000 18 BLE_1M_Ant1_2480_1000~26500 19 Appendix G: Duty Cycle Test Result TestMode Antenna Freq(MHz) ON Time [ms] Period [ms] X DC [%] xFactor Limit Verdict BLE_1M Ant1 2402 0.41 0.62 0.6613 66.13 1.80 --- --- 2440 0.41 0.62 0.6613 66.13 1.80 --- --- 2480 0.41 0.62 0.6613 66.13 1.80 --- --- 20 Test Graphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 21 22 Appendix H: Emissions in Restricted Bands Test Result TestMode Antenna ChName Freq(MHz) Detector Freq [MHz] Result [dBm] Gain [dB] DC Factor [dB] Result [dBuV/m] Limit [dBuV/m] Verdict BLE_1M Ant1 Low 2402 AV 2310.000 -60.13 2.00 1.80 38.87 ≤54 PASS AV 2376.440 -58.57 2.00 1.80 40.43 ≤54 PASS AV 2390.000 -59.76 2.00 1.80 39.24 ≤54 PASS Peak 2310.000 -52.02 2.00 0.00 45.18 ≤74 PASS Peak 2358.485 -48.01 2.00 0.00 49.19 ≤74 PASS Peak 2390.000 -50.15 2.00 0.00 47.05 ≤74 PASS High 2480 AV 2483.500 -57.64 2.00 1.80 41.36 ≤54 PASS AV 2483.600 -57.6 2.00 1.80 41.40 ≤54 PASS AV 2500.000 -59.26 2.00 1.80 39.74 ≤54 PASS Peak 2483.500 -49.84 2.00 0.00 47.36 ≤74 PASS Peak 2485.040 -43.9 2.00 0.00 53.30 ≤74 PASS Peak 2500.000 -51.17 2.00 0.00 46.03 ≤74 PASS Note： 1. The limit in dBm for average detector is conversion from 54dBuV/m, according to 15.209(a). The limit in dBm for peak detector is 20dB above the limit of average detector in dBm. 23 Test Graphs BLE_1M_Ant1_Low_2402_AV BLE_1M_Ant1_Low_2402_Peak BLE_1M_Ant1_High_2480_AV 24 BLE_1M_Ant1_High_2480_Peak

FCC ID:2BKDL-Z88 Test Setup Photos of the EUT FCC ID:2BKDL-Z88