2BHCU-S10Smart Watch

Answer/make calls, message notifications, sleep information, breathing exercises, weather, sports modes, remote photography，music control, etc.

Covered Equipment Attestation Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(5)(i)-(ii) of the Commission’s Rules (47 C.F.R.) we attest as follows for the product listed below: FCC ID Model name 2BHCU-S10 S10, S1, S2, S3, S5, S6, S8, S9, S11, S12, S13, S15, S16, S18, S19, S20, S51, S52, S53, S66, S68, S69 We, applicant Company Name: Shenzhen Dewanghong Technology Co. LTD Address: 14E, Unit D3, Junjinghuating, Minzhi Street, Longhua District, Shenzhen City Phone: 15157357903 certify 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. We certify 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. If you have any questions, please feel free to contact us at the address shown below. Sincerely, Jun.26,2024 Signature Date Printed Name of Signee: Gong Guan Company: Shenzhen Budong Technology Co., Ltd Address: 14E, Unit D3, Junjinghuating, Minzhi Street, Longhua District, Shenzhen City Phone: 15157357903 Email: [email protected]

Confidentiality Request Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we request confidentiality for the documentation of the following products: FCC ID Model name 2BHCU-S10 S10, S1, S2, S3, S5, S6, S8, S9, S11, S12, S13, S15, S16, S18, S19, S20, S51, S52, S53, S66, S68, S69 For the products listed above, we request permanent confidentiality for all applicable exhibits as there are: • the Operational Description • the Block Diagram • the Schematics The above listed exhibits contain trade secrets and proprietary information that could be of benefit to our competitors. If you have any questions, please feel free to contact us at the address shown below. Sincerely, Jun.26,2024 Signature Date Printed Name of Signee: Gong Guan /Manager Company: Shenzhen Budong Technology Co., Ltd Address: 14E, Unit D3, Junjinghuating, Minzhi Street, Longhua District, Shenzhen City Phone: 15157357903 Fax: Email: [email protected]

Shenzhen Budong Technology Co., Ltd 14E, Unit D3, Junjinghuating, Minzhi Street, Longhua District, Shenzhen City Declaration Letter Date: Jun.26,2024 To: Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern: For our business issue and marketing requirement, we would like to list different model number on the FCC certificates and reports, as following: FCC ID: 2BHCU-S10 Model Number: S10, S1, S2, S3, S5, S6, S8, S9, S11, S12, S13, S15, S16, S18, S19, S20, S51, S52, S53, S66, S68, S69 Model Difference: The difference between models is for different market sale, the other (hardware and software) was the same as before. Sincerely, Name / Title Gong Guan/Manager Company Name Shenzhen Budong Technology Co., Ltd Company Address 14E, Unit D3, Junjinghuating, Minzhi Street, Longhua District, Shenzhen City Tel: 15157357903 Fax: Email: [email protected]

External Photographs FCC ID: 2BHCU-S10

Label Sample for FCC ID: 2BHCU-S10 Size for the label: 8mm X 16mm Product Name : Smart Watch Model :S10 FCC ID :2BHCU-S10

Internal photographs FCC ID: 2BHCU-S10 Antenna

Radio frequency radiation exposure evaluation: portable devices 1.1 Radio Frequency Exposure Compliance 1.1.1 Electromagnetic Fields RESULT: Pass Test Specification Test item : Smart Watch Identification / Type No. : S10 FCC ID : 2BHCU-S10 Test standard : CFR47 FCC Part 2: Section 2.1093 FCC KDB Publication 447498 v06 Measurement Record: EIRP[dBm] = maximum peak output + antenna Gain =1.71dBm -1dBi =0.71dBm Since maximum peak output power of the transmitter is 0.71 dBm ≈1.17mW < 10mW. Hence the EUT is excluded from SAR evaluation according to FCC KDB Publication 447498 D01 General RF Exposure Guidance v06.

深圳市麒鑫通达科技有限公司 SHENZHEN QXTD Technology Co., Ltd 样 品 承 认 书 Part Approval Sheet Version： V1.0 Customer： Shenzhen Budong Technology Co., Ltd Project： Bluetooth antenna Part Name： Conducting wire Part Color： Black Part Number： LT13 Sample Delivery Date： April 3, 2021 Sample Quantity： 5PCS Sample type： Built-in Bluetooth wire Reason for Sample Delivery： ○New tooling ○New supplier ○Tooling change ○Engineering change ○Other: Manufacturer： SHENZHEN QXTD Technology Co., Ltd Address： B1, Shayi North Yongfa Science and Technology Park, Xinhe Road, Gonghe Community, Shajing Street, Baoan District, Shenzhen City West side of the first floor and third floor of Building 1, Shayi North Yongfa Science and Technology Park, Xinhe Road, Gonghe Community, Shajing Street, Baoan District, Shenzhen City Supplier sample production confirmation: (stamp required) Formulate Confirm Approve Quality Stamp 代庆蓉 龙超群 傅梁成 曹光平 Customer approval: Project confirmation Project approval Quality confirmation Quality approval Confirmation date 深圳市麒鑫通达科技有限公司 SHENZHEN QXTD Technology Co., Ltd 样 品 承 认 书 Page 1 Confidential documents 机 密 文 件 1.Graphic for reference Figure 2 0.8*20mmBT 2.OTA(Free Space) Channel TRP（dBm） TIS（dBm） 0 6.3 -91.1 39 6.5 -91.3 78 6.6 -91.2 Name ANTENNA Model LT13 Frequency 2.4Ghz Input impedance 50Ω Allowed power 5mW Working temp. -25 ~ +65 °C Storage temp. -40 ~ +85 °C Weight 0.25g Antenna gain天线 增益 -1dBi 深圳市麒鑫通达科技有限公司 SHENZHEN QXTD Technology Co., Ltd 样 品 承 认 书 Page 2 Confidential documents 机 密 文 件 3.Field 4. BT Test Test term Environment Max pairing distance BT Call distance BT Office 16-18m 10-12m 5.Blueprint 深圳市麒鑫通达科技有限公司 SHENZHEN QXTD Technology Co., Ltd 样 品 承 认 书 Page 3 Confidential documents 机 密 文 件

BSL Testing Co.,LTD. Report No.: BSL240604175002RF Report No.: BSL240604175002RF Page 1 of 48 FCC Part 15.247 FCC Part 15C Measurement and Test Report For Shenzhen Budong Technology Co., Ltd FCC ID:2BHCU-S10 FCC Rule(s): FCC Part 15.247 Product Description: Smart Watch Tested Model: S10 Report No.: BSL240604175002RF Tested Date: Jun. 21~30, 2024 Issued Date: Jun.30, 2024 Tested By: Cindy Zheng / Engineer Reviewed By: Haley Wen / EMC Manager Approved & Authorized By: Mike Mo / PSQ Manager Prepared By: BSL Testing Co.,LTD. 1/F, Building B, Xinshidai GR Park, Shiyan Street, Bao'an District, Shenzhen, ShiyanStreet, Bao'an District, Shenzhen,Guangdong,518052,People’s Republic of China Tel: 400-882-9628 Fax: 86- 755-26508703 BSL Testing Co.,LTD. Report No.: BSL240604175002RF Report No.: BSL240604175002RF Page 2 of 48 FCC Part 15.247 TABLE OF CONTENTS 1. GENERAL INFORMATION ...................................................................................................................................... 3 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) .................................................................................. 3 1.2 EUT SETUP AND TEST MODE .................................................................................................................................... 5 1.3 TEST STANDARDS ...................................................................................................................................................... 5 1.4 TEST METHODOLOGY ................................................................................................................................................ 5 1.5 TEST FACILITY .......................................................................................................................................................... 5 1.6 MEASUREMENT UNCERTAINTY ................................................................................................................................. 6 1.7 TEST EQUIPMENT LIST AND DETAILS ........................................................................................................................ 6 3. RF EXPOSURE ............................................................................................................................................................ 7 3.1 STANDARD APPLICABLE ............................................................................................................................................ 7 3.2 TEST RESULT............................................................................................................................................................. 7 4. ANTENNA REQUIREMENT ..................................................................................................................................... 8 4.1 STANDARD APPLICABLE ............................................................................................................................................ 8 4.2 EVALUATION INFORMATION ..................................................................................................................................... 8 5. CONDUCTED EMISSIONS ....................................................................................................................................... 9 6. 20DB EMISSION BANDWIDTH ............................................................................................................................. 11 7. CARRIER FREQUENCIES SEPARATION ........................................................................................................... 18 8. HOPPING CHANNEL NUMBER ............................................................................................................................ 21 9. DWELL TIME ........................................................................................................................................................... 24 10. PSEUDORANDOM FREQUENCY HOPPING SEQUENCE ............................................................................. 27 11. BAND EDGE ............................................................................................................................................................. 28 12. SPURIOUS EMISSION ........................................................................................................................................... 38 BSL Testing Co.,LTD. Report No.: BSL240604175002RF Report No.: BSL240604175002RF Page 3 of 48 FCC Part 15.247 1. GENERAL INFORMATION 1.1 Product Description for Equipment Under Test (EUT) Applicant: Shenzhen Budong Technology Co., Ltd Address of applicant: 14E, Unit D3, Junjinghuating, Minzhi Street, Longhua District, Shenzhen City Manufacturer: Shenzhen Budong Technology Co., Ltd Address of manufacturer: 14E, Unit D3, Junjinghuating, Minzhi Street, Longhua District, Shenzhen City Product Name: Smart Watch Model No.: S10, S1, S2, S3, S5, S6, S8, S9, S11, S12, S13, S15, S16, S18, S19, S20, S51, S52, S53, S66, S68, S69 Test Model No: S10 Quantity of tested samples 1 Serial No.: N/A Operation Frequency: 2402MHz~2480MHz Channel numbers: 79 Channel separation: 1MHz Modulation type: GFSK,Pi/4 QPSK,8DPSK Antenna Type: Cable Antenna Antenna gain: -1dBi Power supply: DC 3.7V by battery BSL Testing Co.,LTD. Report No.: BSL240604175002RF Report No.: BSL240604175002RF Page 4 of 48 FCC Part 15.247 Operation Frequency each of channel Channel Frequency Channel Frequency Channel Frequency Channel Frequency 1 2402MHz 21 2422MHz 41 2442MHz 61 2462MHz 2 2403MHz 22 2423MHz 42 2443MHz 62 2463MHz 3 2404MHz 23 2424MHz 43 2444MHz 63 2464MHz 4 2405MHz 24 2425MHz 44 2445MHz 64 2465MHz 5 2406MHz 25 2426MHz 45 2446MHz 65 2466MHz 6 2407MHz 26 2427MHz 46 2447MHz 66 2467MHz 7 2408MHz 27 2428MHz 47 2448MHz 67 2468MHz 8 2409MHz 28 2429MHz 48 2449MHz 68 2469MHz 9 2410MHz 29 2430MHz 49 2450MHz 69 2470MHz 10 2411MHz 30 2431MHz 50 2451MHz 70 2471MHz 11 2412MHz 31 2432MHz 51 2452MHz 71 2472MHz 12 2…

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Test Setup Photos FCC ID: 2BHCU-S10