2BE9U-HD300PROSmart Watch

FCC Warnning for Bluetooth: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuan t to part 15 of the FCC Rules. These limits are designed to provide reasonable protection againstharmful interference in a residential installation. This equipment generates, uses and can radiateradio frequency energy and, if not installed and used in accordance with the instructions, maycause harmful interference to radio communications. However, there is no guarantee thatinterference will not occur in a particular installation. If this equipment does cause harmfulinterferenc e to radio or television reception, which can be determined by turning the equipmentoff and on, the user is encouraged to try to correct the interference by one or more of thefollowing measures: •Reorient or relocate the receiving antenna. •Increase the separation between the equipment and receiver. •Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. •Consult the dealer or an experienced radio/TV technician for help. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 0cm between the radiator and your body.

CoveredEquipmentAttestationLetter ForCertificationServiceintheUSA FederalCommunicationsCommission EquipmentAuthorizationDivision,ApplicationProcessingBranch 7435OaklandMillsRoad Columbia,MD21048 Towhomitmayconcern PursuanttoSection2.911(d)(5)(i)-(ii)oftheCommission’sRules(47C.F.R.)weattestas followsfortheproductlistedbelow: FCCIDModelname 2BE9U-HD300PROHD300PRO We, Applicant CompanyName:ShenzhenHuadaiTechnologyCo.,Ltd Address:A308,FujiIndustrialPark,No.33LiuheRoad, HenggangStreet,LonggangDistrict, Shenzhen,China Phone:13760447068 certifythattheequipmentforwhichauthorizationissoughtisnot“covered”equipment prohibitedfromreceivinganequipmentauthorizationpursuanttosection2.903oftheFCC rules.Thisincludesthecybersecurityandanti-virussoftwareproducedorprovidedby KasperskyLab,Inc.oranyofit’ssuccessorsandassignees. Wecertifythat,asofthedateofthefilingoftheapplication,theapplicantisnotidentified ontheCoveredListasanentityproducing“covered”equipment. Ifyouhaveanyquestions,pleasefeelfreetocontactusattheaddressshownbelow. Sincerely, SignatureDate:2025-10-23 PrintedNameofSignee:WeiChuchao/N/A Company:ShenzhenHuadaiTechnologyCo.,Ltd Address:A308,FujiIndustrialPark,No.33LiuheRoad,HenggangStreet,LonggangDistrict, Shenzhen,China Phone:13760447068Fax:N/A Email:[email protected]

ConfidentialityRequestLetter ForCertificationServiceintheUSA FederalCommunicationsCommission EquipmentAuthorizationDivision,ApplicationProcessingBranch 7435OaklandMillsRoad Columbia,MD21048 Towhomitmayconcern PursuanttoParagraphs§0.457and0.459oftheCommission’sRules(47C.F.R.)andSection §552(b)(4)oftheFreedomofInformationAct,werequestconfidentialityforthe documentationofthefollowingproducts: FCCIDModelname 2BE9U-HD300PROHD300PRO Fortheproductslistedabove,werequestpermanentconfidentialityforallapplicable exhibitsasthereare:  theOperationalDescription  theBlockDiagram theSchematics  thePartsLists theTuneUpInformation Theabovelistedexhibitscontaintradesecretsandproprietaryinformationthatcouldbeof benefittoourcompetitors. Ifyouhaveanyquestions,pleasefeelfreetocontactusattheaddressshownbelow. Sincerely, Signature Date:2025-10-23 PrintedNameofSignee:WeiChuchao/N/A Company:ShenzhenHuadaiTechnologyCo.,Ltd Address:A308,FujiIndustrialPark,No.33LiuheRoad,HenggangStreet,LonggangDistrict, Shenzhen,China Phone:13760447068Fax:N/A Email:[email protected]

FCC ID: 2BE9U-HD300PRO TB-RF-074-1.0 Appendix III EUT External Photographs Photo 1 Appearance of EUT Photo 2 Appearance of EUT FCC ID: 2BE9U-HD300PRO TB-RF-074-1.0 Photo 3 Appearance of EUT Photo 4 Appearance of EUT FCC ID: 2BE9U-HD300PRO TB-RF-074-1.0 Photo 5 Appearance of EUT Photo 6 Appearance of EUT FCC ID: 2BE9U-HD300PRO TB-RF-074-1.0 Photo 7 Appearance of EUT Photo 8 Appearance of EUT

FCC ID: 2BE9U-HD300PRO TB-RF-074-1.0 Appendix IID Label Appendix II ID Label Location FCC ID: 2BE9U-HD300PRO

FCC ID: 2BE9U-HD300PRO TB-RF-074-1.0 Appendix IV EUT Internal Photographs Photo 8 Internal of EUT Photo 9 Appearance of PCB Antenna FCC ID: 2BE9U-HD300PRO TB-RF-074-1.0 Photo 10 Appearance of PCB Photo 11 Appearance of PCB FCC ID: 2BE9U-HD300PRO TB-RF-074-1.0 Photo 12 Battery parameters

Shenzhen Toby Technology Co., Ltd. Report No.: TBR-C-202509-0164-9 Page: 1 of 8 TB-RF-074-1.0 1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China Tel: +86 75526509301 Fax: +86 75526509195 Maximum Permissible Exposure Evaluation FCC ID: 2BE9U-HD300PRO Original Grant Report No. : TBR-C-202509-0164-9 Applicant : Shenzhen Huadai Technology Co., Ltd Equipment Under Test (EUT) EUT Name : Smart Watch Model No. : HD300PRO Series Model No. : ---- Brand Name : ---- Sample ID : HC-C-202509-0164-01-1# & HC-C-202509-0164-01-2# Receipt Date : 2025-10-10 Test Date : 2025-10-10 to 2025-10-23 Issue Date : 2025-10-23 Standards : FCC Part 2.1093 Test Method : KDB 447498 D01 General RF Exposure Guidance v06 Conclusions : PASS In the configuration tested, the EUT complied with the standards specified above. Test By : Lily Zhang Reviewed By : Emily Tang Approved By : Ivan Su This report details the results of the testing carried out on one sample. The results contained in this test report do not relate to other samples of the same product. The manufacturer should ensure that all products in series production are in conformity with the product sample detailed in the report. Report No.: TBR-C-202509-0164-9 Page: 2 of 8 TB-RF-074-1.0 CONTENTS CONTENTS ............................................................................................................................................. 2 1. GENERAL INFORMATION ABOUT EUT.............................................................................. 4 1.1 Client Information ................................................................................................................. 4 1.2 General Description of EUT (Equipment Under Test) ................................................... 4 2. MEASUREMENT UNCERTAINTY .......................................................................................... 5 3. TEST FACILITY.......................................................................................................................... 6 4. SAR TEST EXCLUSION CALCULATIONS .......................................................................... 7 Report No.: TBR-C-202509-0164-9 Page: 3 of 8 TB-RF-074-1.0 Revision History Report No. Version Description Issued Date TBR-C-202509-0164-9 Rev.01 Initial issue of report 2025-10-23 Report No.: TBR-C-202509-0164-9 Page: 4 of 8 TB-RF-074-1.0 1. General Information about EUT 1. 1 Client Information Applicant : Shenzhen Huadai Technology Co., Ltd Address : A308, Fuji Industrial Park, No.33 Liuhe Road, Henggang Street, Longgang District, Shenzhen, China Manufacturer : Shenzhen Huadai Technology Co., Ltd Address : A308, Fuji Industrial Park, No.33 Liuhe Road, Henggang Street, Longgang District, Shenzhen, China 1.2 General Description of EUT (Equipment Under Test) EUT Name : Smart Watch Models No. : HD300PRO Model Different : ---- Product Description : Operation Frequency: Bluetooth V5.4: 2402MHz~2480MHz Modulation Type: Bluetooth: GFSK, Pi/4-DQPSK, 8-DPSK Antenna Gain: -1.62dBi FPC Antenna Power Rating : Input: DC 5V Li-ion Polymer Battery : 3.85V by 530mAh Rechargeable Li-ion battery Software Version : V1.0 Hardware Version : V1.0 Remark: The above antenna information is declared by manufacturer and for more detailed features description, please refer to the manufacturer's specifications, the laboratory shall not be held responsible. Report No.: TBR-C-202509-0164-9 Page: 5 of 8 TB-RF-074-1.0 2. Measurement Uncertainty The reported uncertainty of measurement y±U，where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2，providing a level of confidence of approximately 95 %. Test Item Parameters Expanded Uncertainty (U Lab ) Conducted Emission Level Accuracy: 9kHz~150kHz 150kHz to 30MHz ±3.50 dB ±3.10 dB Radiated Emission Level Accuracy: 9kHz to 30 MHz ±4.60 dB Radiated Emission Level Accuracy: 30MHz to 1000 MHz ±4.50 dB Radiated Emission Level Accuracy: Above 1000MHz ±4.20 dB RF Power-Conducted Level Accuracy: Above 1000MHz ±0.95 dB Power Spectral Density- Conducted Level Accuracy: Above 1000MHz ±3dB Occupied Bandwidth Level Accuracy: 30MHz to 1000 MHz Above 1000MHz ±3.8% Unwanted Emission- Conducted Level Accuracy: 30MHz to 1000 MHz Above 1000MHz ±2.72 dB Temperature / ±0.6°C Humidity / ±4% Supply voltages / ±2% Time / ±4% Report No.: TBR-C-202509-0164-9 Page: 6 of 8 TB-RF-074-1.0 3. Test Facility The testing report were performed by the Shenzhen Toby Technology Co., Ltd., in their facilities located at 1/F., Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. At the time of testing, the following bodies accredited the Laboratory: CNAS (L5813) The Laboratory has been accredited by CNAS to ISO/IEC 17025: 2017 General Requirements for the Competence of Testing and Calibration Laboratories for the competence in the field of testing. And the Registration No.: CNAS L5813. A2LA Certificate No.: 4750.01 The laboratory has been accredited by American Association for Laboratory Accreditation(A2LA) to ISO/IEC 17025：2017 General Requirements for the Competence of Testing and Calibration Laboratories for the technical competence in the field of Electrical Testing. And the A2LA Certificate No.: 4750.01.FCC Accredited Test Site Number: 854351. Designation Number: CN1223. IC Registration No.: (11950A) The Laboratory has been registered by Certification and Engineering Bureau of Industry Canada for radio equipment testing. The site registration: Site# 11950A. CAB identifier: CN0056. Report No.: TBR-C-202509-0164-9 Page: 7 of 8 TB-RF-074-1.0 4. SAR Test Exclusion Calculations 4.1 FCC: According to KDB 447498 D01 v06 Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies v06. (1) Clause 4.3: General SAR test reduction and exclusion guidance Sub clause 4.31: Standalone SAR test exclusion considerations 1) The 1-g and 10-g SAR test exclusion thre…

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date： 2025/6/3 Themainpurposeofthisreport is: H201AntennaTest ReportV1NewProjectDebugging Themainconclusionsofthisreportare asfollows: Antenna Frequencyrange Materialquality Performancerequirement BT2400-2480MHzFPC Page9of18 No. 101-3, Building 4, Xiangyuer Industrial Park, No. 8 Longsheng Road, Longgang Community, Longgang Street, Longgang District, Shenzhen AllinformationcontainedinthisreportiscopyrightedbyWolete.Pleasedonotdisseminateittoanythirdparty! Page10of18 Antennamatchingcircuit: BT Element E1(0402) E2(0402) 1.5nH E3(0402) 1.2pF AntennapassiveS11parametertest: BT PA Anten na E3 E2 E1 Page11of18 Freq （ MHz ） 24002440 2480 SWR 1.631.351.39 LogMag-12.41-16.58-15.71 Page12of18 Antennapassiveefficiencyandgaintest: BT Frequency (MHz) Gain (dBi) Efficiency (%) 2400-4.8210.45 2410-4.2210.82 2420-3.7711.06 2430-3.4911.32 2440-3.3811.62 Page13of18 2450-3.1512.01 2460-2.7712.42 2470-2.3913.01 2480-2.0813.53 2490-1.8714.24 2500-1.6215.06 Page14of18 Page15of18 Antenna passive radiation pattern: Page16of18 Antenna location and matching image:

Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202509-0164-1 Page: 1 of 69 FCC ID: 2BE9U-HD300PRO TB-RF-074-1.0 RF Test Data for Bluetooth (Conducted Measurements) General Description of EUT Product Name: Smart Watch Test Model: HD300PRO Sample ID: HC-C-202509-0164-01-2# Environmental Conditions Temperature: 24°C Relative Humidity: 48% Test Voltage: DC 5V Test Engineer: Lily Zhang Note: For a more detailed features description, please refer to the report TBR-C-202509-0164-1 The report only show the worst case data. Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202509-0164-1 Page: 2 of 69 FCC ID: 2BE9U-HD300PRO TB-RF-074-1.0 Contents 1. Dwell Time........................................................................................................................................................................................... 3 2. Duty Cycle ........................................................................................................................................................................................... 9 3. Maximum Conducted Output Power ............................................................................................................................................... 15 4. -20dB Bandwidth .............................................................................................................................................................................. 21 5. Occupied Channel Bandwidth ......................................................................................................................................................... 27 6. Band Edge ........................................................................................................................................................................................ 33 7. Band Edge(Hopping) ........................................................................................................................................................................ 40 8. Conducted RF Spurious Emission .................................................................................................................................................. 47 9. Restrict Band .................................................................................................................................................................................... 57 10. Carrier Frequencies Separation ..................................................................................................................................................... 64 11. Number of Hopping Channel ......................................................................................................................................................... 67 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202509-0164-1 Page: 3 of 69 FCC ID: 2BE9U-HD300PRO TB-RF-074-1.0 1. Dwell Time Condition Mode Frequency (MHz) Antenna Pulse Time (ms) Total Dwell Time (ms) Period Time (ms) Limit (ms) Verdict NVNT 1-DH1 2441 Ant1 0.372 119.04 31600 400 Pass NVNT 1-DH3 2441 Ant1 1.62 259.2 31600 400 Pass NVNT 1-DH5 2441 Ant1 2.868 305.92 31600 400 Pass NVNT 2-DH1 2441 Ant1 0.38 121.6 31600 400 Pass NVNT 2-DH3 2441 Ant1 1.632 261.12 31600 400 Pass NVNT 2-DH5 2441 Ant1 2.88 307.2 31600 400 Pass NVNT 3-DH1 2441 Ant1 0.381 121.92 31600 400 Pass NVNT 3-DH3 2441 Ant1 1.63 260.8 31600 400 Pass NVNT 3-DH5 2441 Ant1 2.882 307.413 31600 400 Pass Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202509-0164-1 Page: 4 of 69 FCC ID: 2BE9U-HD300PRO TB-RF-074-1.0 Test Graphs Dwell NVNT 1-DH1 2441MHz Ant1 Dwell NVNT 1-DH3 2441MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202509-0164-1 Page: 5 of 69 FCC ID: 2BE9U-HD300PRO TB-RF-074-1.0 Dwell NVNT 1-DH5 2441MHz Ant1 Dwell NVNT 2-DH1 2441MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202509-0164-1 Page: 6 of 69 FCC ID: 2BE9U-HD300PRO TB-RF-074-1.0 Dwell NVNT 2-DH3 2441MHz Ant1 Dwell NVNT 2-DH5 2441MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202509-0164-1 Page: 7 of 69 FCC ID: 2BE9U-HD300PRO TB-RF-074-1.0 Dwell NVNT 3-DH1 2441MHz Ant1 Dwell NVNT 3-DH3 2441MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202509-0164-1 Page: 8 of 69 FCC ID: 2BE9U-HD300PRO TB-RF-074-1.0 Dwell NVNT 3-DH5 2441MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202509-0164-1 Page: 9 of 69 FCC ID: 2BE9U-HD300PRO TB-RF-074-1.0 2. Duty Cycle Condition Mode Frequency (MHz) Antenna Duty Cycle (%) Correction Factor (dB) 1/T (kHz) NVNT 1-DH5 2402 Ant1 76.53 1.16 0.35 NVNT 1-DH5 2441 Ant1 76.53 1.16 0.35 NVNT 1-DH5 2480 Ant1 76.53 1.16 0.35 NVNT 2-DH5 2402 Ant1 76.85 1.14 0.35 NVNT 2-DH5 2441 Ant1 76.85 1.14 0.35 NVNT 2-DH5 2480 Ant1 76.85 1.14 0.35 NVN…

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Shenzhen Toby Technology Co., Ltd. Report No.: TBR-C-202509-0164-1 Page: 1 of 34 TB-RF-074-1.0 1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China Tel: +86 75526509301 Fax: +86 75526509195 RF Test Report FCC ID: 2BE9U-HD300PRO Original Grant Report No. : TBR-C-202509-0164-1 Applicant : Shenzhen Huadai Technology Co., Ltd Equipment Under Test (EUT) EUT Name : Smart Watch Model No. : HD300PRO Series Model No. : ---- Brand Name : ---- Sample ID : HC-C-202509-0164-01-1# & HC-C-202509-0164-01-2# Receipt Date : 2025-10-10 Test Date : 2025-10-10 to 2025-10-23 Issue Date : 2025-10-23 Standards : FCC Part 15 Subpart C 15.247 Test Method : ANSI C63.10: 2020 KDB 558074 D01 15.247 Meas Guidance v05r02 Conclusions : PASS In the configuration tested, the EUT complied with the standards specified above. Test By : Lily Zhang Reviewed By : Emily Tang Approved By : Ivan Su This report details the results of the testing carried out on one sample. The results contained in this test report do not relate to other samples of the same product. The manufacturer should ensure that all products in series production are in conformity with the product sample detailed in the report. Report No.: TBR-C-202509-0164-1 Page: 2 of 34 TB-RF-074-1.0 Contents CONTENTS ............................................................................................................................................. 2 1. GENERAL INFORMATION ABOUT EUT.............................................................................. 5 1.1 Client Information ................................................................................................................. 5 1.2 General Description of EUT (Equipment Under Test) ................................................... 5 1.3 Block Diagram Showing the Configuration of System Tested ...................................... 7 1.4 Description of Support Units .............................................................................................. 8 1.5 Description of Test Mode .................................................................................................... 8 1.6 Description of Test Software Setting ................................................................................ 9 1.7 Measurement Uncertainty .................................................................................................. 9 1.8 Test Facility ......................................................................................................................... 10 2. TEST SUMMARY ..................................................................................................................... 11 3. TEST SOFTWARE ................................................................................................................... 11 4. TEST EQUIPMENT AND TEST SITE ................................................................................... 12 5. CONDUCTED EMISSION ....................................................................................................... 13 5.1 Test Standard and Limit .................................................................................................... 13 5.2 Test Setup ........................................................................................................................... 13 5.3 Test Procedure ................................................................................................................... 13 5.4 Deviation From Test Standard ......................................................................................... 13 5.5 EUT Operating Mode ........................................................................................................ 13 5.6 Test Data ............................................................................................................................. 13 6. RADIATED AND CONDUCTED UNWANTED EMISSIONS ............................................ 14 6.1 Test Standard and Limit .................................................................................................... 14 6.2 Test Setup ........................................................................................................................... 15 6.3 Test Procedure ................................................................................................................... 16 6.4 Deviation From Test Standard ......................................................................................... 17 6.5 EUT Operating Mode ........................................................................................................ 17 6.6 Test Data ............................................................................................................................. 17 7. RESTRICTED BANDS AND BAND EDGE REQUIREMENT .......................................... 18 7.1 Test Standard and Limit .................................................................................................... 18 7.2 Test Setup ........................................................................................................................... 18 7.3 Test Procedure ................................................................................................................... 19 7.4 Deviation From Test Standard ......................................................................................... 19 7.5 EUT Operating Mode ........................................................................................................ 19 7.6 Test Data ............................................................................................................................. 19 8. 99% OCCUPIED AND 20DB BANDWIDTH ........................................................................ 20 8.1 Test Standard and Limit .................................................................................................... 20 8.2 Test Setup .............................…

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FCC ID: 2BE9U-HD300PRO TB-RF-074-1.0 Appendix V EUT Test Photographs Photo of Setup for Radiated Emission (Below 1 GHz) Photo of Setup for Radiated Emission (Above 1 GHz) FCC ID: 2BE9U-HD300PRO TB-RF-074-1.0 Photo of Setup for Conducted Emission Photo of Setup for Conducted Measurement FCC ID: 2BE9U-HD300PRO TB-RF-074-1.0 Photo of Setup for Conducted Measurement -----END OF THE REPORT-----