FCC ID: 2AS9DSIFI2 TWS headphone

Label TWS headphone Model name: SiFi FCC ID: 2AS9DSIFI2 This device complies with part 15 of the FCC Rules. W:10mm 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. L:20mm Note:The label is silk-screen on the sample

2020-04-01 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act as Agent On our behalf, I appoint Shenzhen STS Test Services Co., Ltd., 1/F., Building B, Zhuoke Science Park, No.190, Chongqing Road, Fuyong Street, Baoan District, Shenzhen, Guangdong,China (Name of Agent company name and address) to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commissions regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, still resides with GuangDong Substanbo Technology Co., Ltd. Room 2508, Bd. 4, Tianan yungu 2nd Industrial Park, Longgang District Shenzhen, China. (Applicant Name and address) Sincerely, Signature Name: Lawrence Chen Title: Product Director Company: GuangDong Substanbo Technology Co., Ltd. Address: Room 2508, Bd. 4, Tianan yungu 2nd Industrial Park, Longgang District Shenzhen, China.

2020-04-01 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID:__ 2AS9DSIFI2___ Product Name:___ TWS headphone ___ Model name: SiFi , SiFi Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commissions rules, we hereby request that the following documents be held confidential:

(List here the documents for which you are seeking confidentiality for example ) Schematics Block diagram Operation description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. Sincerely, Signature Name: Lawrence Chen Title: Product Director Company: GuangDong Substanbo Technology Co., Ltd. Address: Room 2508, Bd. 4, Tianan yungu 2nd Industrial Park, Longgang District Shenzhen, China.

Differences Description We GuangDong Substanbo Technology Co., Ltd. state:

Product TWS headphone Model Name SiFi , SiFi Brand Name Bomaker FCC ID: 2AS9DSIFI2 The electrical circuit design, layout, components used and internal wiring for above models are identical, only different in model name The product have left and right earphones ,they are electrically identical. and appearance. Signatory Date 2020-04.01 Signature Name: Lawrence Chen Title: Product Director Company: GuangDong Substanbo Technology Co., Ltd. Address: Room 2508, Bd. 4, Tianan yungu 2nd Industrial Park, Longgang District Shenzhen, China.