2A3SJ-M8WWireless Mouse

Wireless Mouse MODEL:M8W 8 Polling rate Debounce time 826000 polling rate polling rate Debounce Debounce turn on 26000 26000 95 14 14 Led indicator 118x60.5x38.5mm Around 55g Rating 5V 400mA 3.7V/300mA

Built on Experience AB Model Difference 2022/10/18 EUT NAME: Wireless Mouse FCC ID: 2A3SJ-M8W MODEL : M8W, M8W-BLACK,M8W-WHITE,M8W-RETRO,M8W-FROSTY-MINT, M8W-FROSTY-PURPLE All the model are the same circuit and RF module, except model names. Sincerely Client’s signature Client’s signature: Client’s name / title : Fredrik Martinsson / product manager Contact information / address: Built on Experience AB

Built on Experience AB 2022.10.18 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: Wireless Mouse Trademark: Xtrfy MODEL : M8W，M8W-BLACK,M8W-WHITE,M8W-RETRO,M8W-FROSTY-MINT, M8W-FROSTY-PURPLE FCC ID: 2A3SJ-M8W 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 : Fredrik Martinsson / product manager Contact information / address: Built on Experience AB

Built on Experience AB 2022.10.18 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION EUT NAME: Wireless Mouse Trademark: Xtrfy MODEL : M8W，M8W-BLACK,M8W-WHITE,M8W-RETRO,M8W-FROSTY-MINT, M8W-FROSTY-PURPLE FCC ID: 2A3SJ-M8W 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 : Fredrik Martinsson / product manager Contact information / address: Built on Experience AB

External Photos

Size:30*20mm FCC ID: 2A3SJ-M8W Label location

Internal Photos Antenna

Manufacture Compx Semiconductor Corp Antenna schematic and layout

FCC ID: 2A3SJ-M8W RF exposure evaluation §2.1093 Radiofrequency radiation exposure evaluation: Portable Devices. According to§15.247(i) and§1.1307b(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the commission’s guidance. The 1-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, where  f(GHz) is the RF channel transmit frequency in GHz  Power and distance are rounded to the nearest mW and mm before calculation  When the minimum test separation distance is < 5 mm, a distance of 5 mm according is applied to determine SAR test exclusion.  The result is rounded to one decimal place for comparison  GFSK Modulation Frequency (GHz) Max. Power (dBm) Tune up Power (dBm) Max. Tune up Power (dBm) Max. Tune up Power (mW) Test distance (mm) Result exclusion thresholds for 1-g SAR GFSK 2.475 4.368 4±1 5 3.16 5 0.99 3.0 Conclusion: For the max result : 0.99≤ FCC Limit 3.0 for 1g SAR. The Product unsupported at the same time to Transmitting.

No.：BCTC/RF-EMC-005 Page: 1 of 41 Edition：A.5 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2210884322E Applicant: Built on Experience AB Product Name: Wireless Mouse Model/Type Ref.: M8W Tested Date: 2022-10-10 to 2022-10-14 Issued Date: 2022-10-14 Report No.: BCTC2210884322E No.：BCTC/RF-EMC-005 Page: 2 of 41 Edition：A.5 FCC ID: 2A3SJ-M8W 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: Wireless Mouse Trademark: Xtrfy Model/Type Ref.: M8W M8W-BLACK, M8W-WHITE, M8W-RETRO, M8W-FROSTY-MINT, M8W-FROSTY-PURPLE Prepared For: Built on Experience AB Address: Rattgatan 7B. 26151, Landskrona, Sweden Manufacturer: Built on Experience AB Address: Rattgatan 7B. 26151, Landskrona, Sweden 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: 2022-10-10 Sample tested Date: 2022-10-10 to 2022-10-14 Issue Date: 2022-10-14 Report No.: BCTC2210884322E Test Standards: FCC Part15.247 ANSI C63.10-2013 Test Results: PASS Remark: This is 2.4G radio test report. Tested by: Approved by: Brave Zeng/ Project Handler Zero Zhou/Reviewer Report No.: BCTC2210884322E No.：BCTC/RF-EMC-005 Page: 3 of 41 Edition：A.5 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 ...................................................................................... 8 4.4 Channel List .......................................................................................................... 9 4.5 Test Mode ............................................................................................................. 9 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 ..... 23 8.1 Block Diagram Of Test Setup .............................................................................. 23 8.2 Limit .................................................................................................................... 23 8.3 Test Procedure ................................................................................................... 24 8.4 EUT operating Conditions ................................................................................... 24 8.5 Test Result .......................................................................................................... 25 9. Power Spectral Density Test ............................................................................... 26 9.1 Block Diagram Of Test Setup .............................................................................. 26 9.2 Limit .................................................................................................................... 26 9.3 Test Procedure ................................................................................................... 26 9.4 EUT Operating Conditions .................................................................................. 26 9.5 Test Result .......................................................................................................... 27 10. Bandwidth Test .........................................................................…

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Report No.: BCTC2210884322E No.：BCTC/RF-EMC-005 Page: 39 of 41 Edition：A.5 15. EUT Test Setup Photographs Conducted emissions Photo Radiated Measurement Photos Report No.: BCTC2210884322E No.：BCTC/RF-EMC-005 Page: 40 of 41 Edition：A.5