2BFCM-C28Smart watch

(LEADOYS Technology (ShenZhen) Co., Ltd.) (2024.4.15) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID: 2BFCM-C28) [LEADOYS Technology (ShenZhen) 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, (Applicant signature) (Applicant printed name) Fan zhijun (LEADOYS Technology (ShenZhen) Co., Ltd.) (2024.4.15) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID: 2BFCM-C28) [LEADOYS Technology (ShenZhen) 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 an entity producing “covered” equipment. Sincerely, (Applicant signature) (Applicant printed name) Fan zhijun

LEADOYS Technology (ShenZhen) Co., Ltd. 2024.4.15 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen BCTC Testing Co., Ltd to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Client’s signature: Client’s name / title : Fan zhijun / Project Manager Contact information / address: Room 505, Building B, Bantian International Center, Longgang, Shenzhen, China

LEADOYS Technology (ShenZhen) Co., Ltd. 2024.4.15 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: Smart watch Trademark: N/A MODEL: C28, C28PLUS, C28PRO, BT200, BT120, BT101, BT102 FCC ID: 2BFCM-C28 To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the - Block Diagram - Schematics - Operational Description required to be submitted with this application be permanently withheld from public review. The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Please contact me if there is any information you may need. Sincerely, Client’s signature: Client’s name / title : Fan zhijun / Project Manager Contact information / address: Room 505, Building B, Bantian International Center, Longgang, Shenzhen, China

LEADOYS Technology (ShenZhen) Co., Ltd. Model Difference 2024/4/15 EUT NAME: Smart watch Trademark: N/A MODEL: C28, C28PLUS, C28PRO, BT200, BT120, BT101, BT102 FCC ID: 2BFCM-C28 All the models are the same circuit and RF module, except model number and appearance color. Regards Sincerely Client’s signature: Client’s name / title : Fan zhijun / Project Manager Contact information / address: Room 505, Building B, Bantian International Center, Longgang, Shenzhen, China

External Photos

Label & label location Location: Label: FCC ID: 2BFCM-C28

Internal Photos Antenna

RF EXPOSURE EVALUATION METHOD FCC ID: 2BFCM-C28 Applicable standard： In accordance with FCC 47 CFR part 2 (2.1093) this device has been defined as a portable device which is defined as a transmitting device designed to be used so that the radiating structure(s) of the device is/are within 20 centimeters of the body of the user. Portable devices must be evaluated using the specified in FCC 47 CFR part 2 (2.1093) and ANSI/IEEEC95.1-1992. and had been tested in accordance with the measurement methods and procedures specified in IEEE 1528-2003. Per FCC KDB 447498 D01 v06, the 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances s 50 mm are determined by: SAR Test Exclusion Thresholds for 100 MHz – 6 GHz and ≤ 50 mm Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. 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 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 The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. BT Modulation Frequency Maximum Conducted Output Power(PK) Conducted Output Power Limit (MHz) (dBm) dBm GFSK 2402 0.74 21 2441 1.52 21 2480 1.77 21 π/ 4 DQPSK 2402 1.56 21 2441 2.26 21 2480 2.40 21 8DPSK 2402 2.11 21 2441 2.71 21 2480 2.81 21 max possible output power (PK, conducted)：3±1dBm 4dBm=2.51mW 2402MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 2.51/5*√2.402=0.778≤3.0 2441MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 2.51/5*√2.441=0.784≤3.0 2480MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 2.51/5*√2.48=0.791≤3.0 BLE Mode Frequency(MHz) Maximum Conducted Output Power(PK) (dBm) Conducted Output Power Limit(dBm) GFSK(1Mbps) 2402 4.74 30 2440 4.74 30 2480 4.59 30 GFSK(2Mbps) 2402 4.80 30 2440 4.82 30 2480 4.67 30 max possible output power (PK, conducted)：5±1dBm 6dBm=3.98mW 2402MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 3.98/5*√2.402=1.234≤3.0 2440MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 3.98/5*√2.440=1.243≤3.0 2480MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 3.98/5*√2.48=1.254≤3.0

天 线 测 试 报 告 test report 客 户： 乐戴 项 目 : C28 射 频： 姚工 日 期： 2024.03.29 版 本： 01 变更记录说明 时间版本说明 实 验 室 测 试 环 境 及 设 备 测试项目测试设备 S11、S12 、VSWR 、LOSS网络分析仪E5071B、E5062A Efficiency、Gain 3D Radiation Pattern Satimo SG16暗室、GP7*4*3暗室、E5071B TRP、TIS Satimo SG16暗室、GP7*4*3暗室、8960 、 CMW500、MT8820C、E4438C、 项 目 调 试 简 介 整机类型 手表 频段信息 天线形式 天线种类及 频段信息 天线 BT单极 天线材质导线 BT 天 线 匹 配 电 路 主天线 ElementValue附图说明 E1(0201) 主板原匹配 E2(0201) E3(0201) RF Module E1E3 Antenna E4E2 BT天 线 无 源 驻 波 BT天 线 无 源 效 率 BT 天 线 无 源 方 向 图 天 线 规 格 尺 寸 射频 ：姚工 电话 ：15813831561 邮箱 ：[email protected] 地址 ：龙华区龙观大道440号龙城工业区御龙办公楼二楼 联 系 方 式 THE END

No.：BCTC/RF-EMC-005 Page: 1 of 53 Edition：B.1 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2404022985-2E Applicant: LEADOYS Technology (ShenZhen) Co., Ltd. Product Name: Smart watch Test Model: C28 Tested Date: 2024-04-08 to 2024-04-16 Issued Date: 2024-04-17 Report No.: BCTC2404022985-2E No.：BCTC/RF-EMC-005 Page: 2 of 53 Edition：B.1 FCC ID: 2BFCM-C28 The test report is effective only with both signature and specialized stamp.This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen BCTC Testing Co., Ltd, this report can’t be reproduced except in full.The tested sample(s) and the sample information are provided by the client. Product Name: Smart watch Trademark: N/A Model/Type Reference: C28 C28PLUS, C28PRO, BT200, BT120, BT101, BT102 Prepared For: LEADOYS Technology (ShenZhen) Co., Ltd. Address: Room 505, Building B, Bantian International Center, Longgang, Shenzhen, China Manufacturer: LEADOYS Technology (ShenZhen) Co., Ltd. Address: Room 505, Building B, Bantian International Center, Longgang, Shenzhen, China Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Zhancheng, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: 2024-04-08 Sample Tested Date: 2024-04-08 to 2024-04-16 Issue Date: 2024-04-17 Report No.: BCTC2404022985-2E Test Standards: FCC Part15.247 ANSI C63.10-2013 Test Results: PASS Remark: This is Bluetooth BLE radio test report. Tested by: Approved by: Shanshan. Zhang / Project Handler Zero Zhou/Reviewer Report No.: BCTC2404022985-2E No.：BCTC/RF-EMC-005 Page: 3 of 53 Edition：B.1 Table Of Content Test Report Declaration Page 1. Version .................................................................................................................. 5 2. Test Summary ....................................................................................................... 6 3. Measurement Uncertainty ..................................................................................... 7 4. Product Information And Test Setup ..................................................................... 8 4.1 Product Information ............................................................................................... 8 4.2 Test Setup Configuration ...................................................................................... 9 4.3 Support Equipment ............................................................................................... 9 4.4 Channel List ........................................................................................................ 10 4.5 Test Mode ........................................................................................................... 10 4.6 Table of parameters of text software setting ....................................................... 10 5. Test Facility And Test Instrument Used ............................................................... 11 5.1 Test Facility ......................................................................................................... 11 5.2 Test Instrument Used .......................................................................................... 11 6. Conducted Emissions .......................................................................................... 13 6.1 Block Diagram Of Test Setup .............................................................................. 13 6.2 Limit .................................................................................................................... 13 6.3 Test procedure .................................................................................................... 13 6.4 EUT Operating Conditions .................................................................................. 13 6.5 Test Result .......................................................................................................... 14 7. Radiated Emissions ............................................................................................. 16 7.1 Block Diagram Of Test Setup .............................................................................. 16 7.2 Limit .................................................................................................................... 17 7.3 Test procedure .................................................................................................... 18 7.4 EUT operating Conditions ................................................................................... 19 7.5 Test Result .......................................................................................................... 19 8. Radiated Band Emission Measurement And Restricted Bands Of Operation ..... 24 8.1 Block Diagram Of Test Setup .............................................................................. 24 8.2 Limit .................................................................................................................... 24 8.3 Test Procedure ................................................................................................... 25 8.4 EUT Operating Conditions .................................................................................. 26 8.5 Test Result .......................................................................................................... 26 9. Power Spectral Density Test ............................................................................... 27 9.1 Block Diagram Of Test Setup .............................................................................. 27 9.2 Limit .................................................................................................................... 27 9.3 Test procedure .................................................................................................... 27 9.4 EUT Operating Conditions ...............................................................…

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Conducted emissions Radiated Measurement Photos