2BKZS-J300Smart watch

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following 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. The device has been evaluated to meet general RF exposure requirement. FCC Warning Statement:

Shenzhen Jinruihuan Technology Co., LTD 9/12/2024 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: 2BKZS-J300 Shenzhen Jinruihuan Technology 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, Name: Liu Wei Title: Manager Shenzhen Jinruihuan Technology Co., LTD 9/12/2024 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: 2BKZS-J300 Shenzhen Jinruihuan Technology 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, Name: Liu Wei Title: Manager

Shenzhen Jinruihuan Technology Co., LTD 9/12/2024 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR Product Name: Smart watch FCC ID: 2BKZS–J300 Model(s): J300 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 (Schematic Diagram, Block Diagram, Operational Description) required to be submitted with this application be permanently withheld from public review. 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 Please contact me if there is any information you may need. Sincerely, Signature: September 12, 2024 Name Liu Wei Position Manager Company Name Shenzhen Jinruihuan Technology Co., LTD Address 3F, Building A, Tenghongxing Science Park, No.17 Zhenxing Road, Loucun, Xinhu Street, Guangming District, Shenzhen Tel 18682112297 Fax / Email [email protected]

Shenzhen Jinruihuan Technology Co., LTD 9/12/2024 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (Shenzhen PSI 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, Signature: September 12, 2024 Name Liu Wei Position Manager Company Name Shenzhen Jinruihuan Technology Co., LTD Address 3F, Building A, Tenghongxing Science Park, No.17 Zhenxing Road, Loucun, Xinhu Street, Guangming District, Shenzhen Tel 18682112297 Fax / Email [email protected]

Page 1 of 4 Report No.: psi2408064-C01-R05 Shenzhen PSI Testing Co., Ltd. Tel: 0755-23011775 | E-mail: [email protected] | http://www.psi-lab.com Add: 1-2/F., Building 5, Yudafu Industrial Park, No.10, Xingye West Road, Shajing Subdistrict, Bao'an District, Shenzhen, Guangdong, China Appendix II external photos FCC ID: 2BKZS-J300 Page 2 of 4 Report No.: psi2408064-C01-R05 Shenzhen PSI Testing Co., Ltd. Tel: 0755-23011775 | E-mail: [email protected] | http://www.psi-lab.com Add: 1-2/F., Building 5, Yudafu Industrial Park, No.10, Xingye West Road, Shajing Subdistrict, Bao'an District, Shenzhen, Guangdong, China Page 3 of 4 Report No.: psi2408064-C01-R05 Shenzhen PSI Testing Co., Ltd. Tel: 0755-23011775 | E-mail: [email protected] | http://www.psi-lab.com Add: 1-2/F., Building 5, Yudafu Industrial Park, No.10, Xingye West Road, Shajing Subdistrict, Bao'an District, Shenzhen, Guangdong, China Page 4 of 4 Report No.: psi2408064-C01-R05 Shenzhen PSI Testing Co., Ltd. Tel: 0755-23011775 | E-mail: [email protected] | http://www.psi-lab.com Add: 1-2/F., Building 5, Yudafu Industrial Park, No.10, Xingye West Road, Shajing Subdistrict, Bao'an District, Shenzhen, Guangdong, China ------End------

Label Location FCC ID: 2BKZS-J300 Model No.: J300

Page 1 of 4 Report No.: psi2408064-C01-R05 Shenzhen PSI Testing Co., Ltd. Tel: 0755-23011775 | E-mail: [email protected] | http://www.psi-lab.com Add: 1-2/F., Building 5, Yudafu Industrial Park, No.10, Xingye West Road, Shajing Subdistrict, Bao'an District, Shenzhen, Guangdong, China Appendix III internal photos FCC ID: 2BKZS-J300 Page 2 of 4 Report No.: psi2408064-C01-R05 Shenzhen PSI Testing Co., Ltd. Tel: 0755-23011775 | E-mail: [email protected] | http://www.psi-lab.com Add: 1-2/F., Building 5, Yudafu Industrial Park, No.10, Xingye West Road, Shajing Subdistrict, Bao'an District, Shenzhen, Guangdong, China Page 3 of 4 Report No.: psi2408064-C01-R05 Shenzhen PSI Testing Co., Ltd. Tel: 0755-23011775 | E-mail: [email protected] | http://www.psi-lab.com Add: 1-2/F., Building 5, Yudafu Industrial Park, No.10, Xingye West Road, Shajing Subdistrict, Bao'an District, Shenzhen, Guangdong, China Page 4 of 4 Report No.: psi2408064-C01-R05 Shenzhen PSI Testing Co., Ltd. Tel: 0755-23011775 | E-mail: [email protected] | http://www.psi-lab.com Add: 1-2/F., Building 5, Yudafu Industrial Park, No.10, Xingye West Road, Shajing Subdistrict, Bao'an District, Shenzhen, Guangdong, China ------End------ BT ANT

FCC ID: 2BKZS-J300 Shenzhen PSI Testing Co., Ltd. Tel: 0755-23011775 | E-mail: [email protected] | http://www.psi-lab.com Add: 1-2/F., Building 5, Yudafu Industrial Park, No.10, Xingye West Road, Shajing Subdistrict, Bao'an District, Shenzhen, Guangdong, China RF Exposure evaluation According to 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 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 BT EDR Worse case output power is as below: [2480MHz: 2.68dBm] Antenna Gain is 0dBi Maximum output power is 2.68dBm (1.85mW). (1.85mW /5mm)·[√2.480(GHz)]= 0.58<3.0 for 1-g SAR Then SAR evaluation is not required

ShenzhenfirstlinecableCo.,LTD Add:21Building,Wanfeng98IndustrialCity,ShajingStreet,Baoan District,Shenzhen AntennaSpecificationforApproval CustomerName ： ShenzhenMoYoungtechnologyco.,LTD ProductName ： 2.4Gantennalength25mmred Antennatype:monopole PartNO.:C10-35-2.5 WriteBy：ZhuangJiebin IssuedDate:2021-10-08 client: R&DDept BusinessDept ApprovedBy ISDN R&DDept EngineerDept Approval ZhuangCaihong ZhuangJiebinZhuangJiebin ProductSpecification A. ElectricalCharacteristics Frequency2400MHz ~2500MHzVSWR<3.0 Efficiency>30% Impedance50 OhmPolarization LineGain 0DBi B.Material&MechanicalCharacteristics MaterialofRadiatorCu CableType1.019PRed 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 RadiationPattern:

Shenzhen PSI Testing Co., Ltd. Tel: 0755-23011775 | E-mail: [email protected] | http://www.psi-lab.com Add: 1-2/F., Building 5, Yudafu Industrial Park, No.10, Xingye West Road, Shajing Subdistrict, Bao'an District, Shenzhen, Guangdong, China FCC TEST REPORT FCC ID: 2BKZS-J300 On Behalf of Shenzhen Jinruihuan Technology Co., LTD Smart watch Model No.: J300 Prepared for : Shenzhen Jinruihuan Technology Co., LTD Address : 3F, Building A, Tenghongxing Science Park, No.17 Zhenxing Road, Loucun, Xinhu Street, Guangming District, Shenzhen Prepared By : Shenzhen PSI Testing Co., Ltd. Address : 1-2/F., Building 5, Yudafu Industrial Park, No.10, Xingye West Road, Shajing Subdistrict, Bao'an District, Shenzhen, Guangdong, China Report Number : psi2408064-C01-R05 Date of Receipt : August 15, 2024 Date of Test : August 16, 2024- August 26, 2024 Date of Report : August 27, 2024 Version Number : V0 Page 2 of 45 Report No.: psi2408064-C01-R05 Shenzhen PSI Testing Co., Ltd. Tel: 0755-23011775 | E-mail: [email protected] | http://www.psi-lab.com Add: 1-2/F., Building 5, Yudafu Industrial Park, No.10, Xingye West Road, Shajing Subdistrict, Bao'an District, Shenzhen, Guangdong, China TABLE OF CONTENTS Description Page 1. Summary Of Standards And Results ............................................................................................ 6 1.1. Description of Standards and Results ..................................................................................... 6 2. General Information ........................................................................................................................ 7 2.1. Description of Device (EUT) .................................................................................................... 7 2.2. Accessories of Device (EUT) .................................................................................................. 8 2.3. Tested Supporting System Details .......................................................................................... 8 2.4. Block Diagram of connection between EUT and simulators ................................................... 8 2.5. Test Mode Description ............................................................................................................. 8 2.6. Test Conditions ........................................................................................................................ 9 2.7. Test Facility .............................................................................................................................. 9 2.8. Measurement Uncertainty ....................................................................................................... 9 2.9. Test Equipment List ............................................................................................................... 10 3. Maximum Peak Output Power ..................................................................................................... 11 3.1. Limit ....................................................................................................................................... 11 3.2. Test Procedure ...................................................................................................................... 11 3.3. Test Setup .............................................................................................................................. 11 3.4. Test Result ............................................................................................................................. 11 4. Bandwidth ..................................................................................................................................... 12 4.1. Limit ....................................................................................................................................... 12 4.2. Test Procedure ...................................................................................................................... 12 4.3. Test Result ............................................................................................................................. 12 5. Carrier Frequency Separation ..................................................................................................... 16 5.1. Limit ....................................................................................................................................... 16 5.2. Test Procedure ...................................................................................................................... 16 5.3. Test Result ............................................................................................................................. 16 6. Number Of Hopping Channel ...................................................................................................... 17 6.1. Limit ....................................................................................................................................... 17 6.2. Test Procedure ...................................................................................................................... 17 6.3. Test Result ............................................................................................................................. 17 7. Dwell Time ..................................................................................................................................... 18 7.1. Test limit ................................................................................................................................. 18 7.2. Test Procedure ...................................................................................................................... 18 7.3. Test Result ............................................................................................................................. 18 8. Out-of-band Emissions .....................................................................................…

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Page 1 of 2 Report No.: psi2408064-C01-R05 Shenzhen PSI Testing Co., Ltd. Tel: 0755-23011775 | E-mail: [email protected] | http://www.psi-lab.com Add: 1-2/F., Building 5, Yudafu Industrial Park, No.10, Xingye West Road, Shajing Subdistrict, Bao'an District, Shenzhen, Guangdong, China Appendix I Test Setup Photo FCC ID: 2BKZS-J300 Spurious Radiation Emissions Test (<1G) Spurious Radiation Emissions Test (>1G) Page 2 of 2 Report No.: psi2408064-C01-R05 Shenzhen PSI Testing Co., Ltd. Tel: 0755-23011775 | E-mail: [email protected] | http://www.psi-lab.com Add: 1-2/F., Building 5, Yudafu Industrial Park, No.10, Xingye West Road, Shajing Subdistrict, Bao'an District, Shenzhen, Guangdong, China Conducted emission Test ------End------