2A5ZU-BTL308PLAYBULB Sphere

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Shenzhen Baojia Battery Technology Co.,Ltd. Unit 201, Block A, Building 6th, World Expo Bay South Coast, Heping community, Fuhai Street, Baoan District, Shenzhen, China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2025/12/05 U.S. Agent Designation Shenzhen Baojia Battery Technology Co.,Ltd. acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought (FCC ID: 2A5ZU-BTL308): Name and company of U.S. agent: GLOCERTS TECHNOLOGY INC Physical U.S. address of agent: 19784 SUNKISSED RIDGE DR RIVERSIDE, CA 92507 United States FRN of U.S. agent: 0036339737 Email address of U.S. agent: [email protected] GLOCERTS TECHNOLOGY INC acknowledges their obligation to accept service of process on behalf of Shenzhen Baojia Battery Technology Co.,Ltd. Shenzhen Baojia Battery Technology Co.,Ltd. with the FRN [0032172074] accepts its obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. By signing this form, we confirm the above and that we are aware of the application requirements listed under § 2.911(d)(7). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB. Sincerely, Signature Derek Hao Manager Shenzhen Baojia Battery Technology Co.,Ltd. Signature Huiying Fan Director GLOCERTS TECHNOLOGY INC 48_[mo del] US_Agent_2.911(d)(7) - U, V0 5

FCC ID:2A5ZU-BTL308 External Photos of the EUT FCC ID:2A5ZU-BTL308 FCC ID:2A5ZU-BTL308

Label and Location Size: L: 2.0cm*W: 1.0cm Label and Location FCC ID : 2A5ZU-BTL308

FCC ID:2A5ZU-BTL308 Internal Photos of the EUT FCC ID:2A5ZU-BTL308 ANT FCC ID:2A5ZU-BTL308 FCC ID:2A5ZU-BTL308 FCC ID:2A5ZU-BTL308

Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn RF Exposure evaluation Report Reference No. ..................... : FCC ID. ........................................... : CTA25112802502 2A5ZU-BTL308 Compiled by ( position+printed name+signature) .. : File administrators Zoey Cao Supervised by ( position+printed name+signature) .. : Project Engineer Ace Chai Approved by ( position+printed name+signature) .. : RF Manager Eric Wang Date of issue ..................................... : Dec. 04, 2025 Testing Laboratory Name ............. : Shenzhen CTA Testing Technology Co., Ltd. Address ............................................ : Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Applicant’s name ........................... : Shenzhen Baojia Battery Technology Co.,Ltd. Address ............................................ : Unit 201, Block A, Building 6th, World Expo Bay South Coast, Heping community, Fuhai Street, Baoan District, Shenzhen, China Standard ........................................... : 47CFR §1.1310 47CFR §2.1093 KDB447498 D01 General RF Exposure Guidance v06 Shenzhen CTA Testing Technology Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purpses as long as the Shenzhen CTA Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen CTA Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Test item description .................... : PLAYBULB Sphere Trade Mark ....................................... : MIPOW/PLAYBULB Manufacturer .................................... : Shenzhen Baojia Battery Technology Co.,Ltd. Model/Type reference ....................... : BTL308 Listed Models ................................... : N/A Rating ............................................... : DC 3.7V From battery and DC 5.0V From external circuit Result ................................................ : PASS Report No.: CTA25112802502 Page 2 of 8 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn T E S T R E P O R T Equipment under Test : PLAYBULB Sphere Model /Type : BTL308 Listed Models : N/A Applicant : Shenzhen Baojia Battery Technology Co.,Ltd. Address : Unit 201, Block A, Building 6th, World Expo Bay South Coast, Heping community, Fuhai Street, Baoan District, Shenzhen, China Manufacturer : Shenzhen Baojia Battery Technology Co.,Ltd. Address : Unit 201, Block A, Building 6th, World Expo Bay South Coast, Heping community, Fuhai Street, Baoan District, Shenzhen, China Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: CTA25112802502 Page 3 of 8 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Contents 1 TEST STANDARDS ............................................................................................................ 4 2 SUMMARY .......................................................................................................................... 5 2.1 General Remarks ..................................................................................................... 5 2.2 Product Description ................................................................................................. 5 2.3 Special Accessories ................................................................................................. 5 2.4 Modifications ............................................................................................................ 5 3 TEST ENVIRONMENT ....................................................................................................... 6 3.1 Address of the test laboratory .................................................................................. 6 3.2 Test Facility .............................................................................................................. 6 3.3 Statement of the measurement uncertainty ............................................................. 6 4 Test limit .............................................................................................................................. 7 4.1 Requirement ............................................................................................................ 7 4.2 Conducted Power Results ....................................................................................... 7 4.3 Manufacturing tolerance .......................................................................................... 7 4.4 Evaluation Result ..................................................................................................... 8 4.5 Simultaneous Transmission for SAR Exclusion ...................................................... 8 5 Conclusion ........................................................................................................................... 8 Report No.: CTA25112802502 Page 4 of 8 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, S…

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1 、 UsethePCBon-boardantenna.Antennadimensiondrawing: 2 、 Description: MaterialFR4(PCBboardantenna) WorkingfrequencyB:2400~2500MHz VSWR<2 PeakGain2.5dBi@2441MHz Impedance50Ω 3 、 ReturnLoss ： 4 、 Smithchart ： 5 、 VSWR ： 6 、 3DRadiationGain@2450MHz(unit:dBi) Manufacturer:Shenzhen Baojia Battery Technology Co.,Ltd. Address:Unit 201, Block A, Building 6th, World Expo Bay South Coast, Heping community, Fuhai Street, Baoan District, Shenzhen, China

Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn FCC PART 15 SUBPART C TEST REPORT FCC PART 15.247 Report Reference No. ...................: FCC ID. ......................................... : CTA25112802501 2A5ZU-BTL308 Compiled by ( position+printed name+signature) : File administrators Zoey Cao Supervised by ( position+printed name+signature) : Project Engineer Ace Chai Approved by ( position+printed name+signature) : RF Manager Eric Wang Date of issue ...................................: Dec. 04, 2025 Testing Laboratory Name .............: Shenzhen CTA Testing Technology Co., Ltd. Address ..........................................: Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Applicant’s name...........................: Shenzhen Baojia Battery Technology Co.,Ltd. Address ...........................................: Unit 201, Block A, Building 6th, World Expo Bay South Coast, Heping community, Fuhai Street, Baoan District, Shenzhen, China Test specification ......................... : Standard ..........................................: FCC Part 15.247 Shenzhen CTA Testing Technology Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen CTA Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen CTA Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Equipment description ................ : PLAYBULB Sphere Trade Mark ......................................: MIPOW/PLAYBULB Manufacturer ...................................: Shenzhen Baojia Battery Technology Co.,Ltd. Model/Type reference .....................: BTL308 Listed Models ..................................: N/A Modulation ......................................: GFSK Frequency .......................................: From 2402MHz to 2480MHz Ratings ............................................: DC 3.7V From battery and DC 5.0V From external circuit Result ..............................................: PASS Report No.: CTA25112802501 Page 2 of 34 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn T E S T R E P O R T Equipment under Test : PLAYBULB Sphere Model /Type : BTL308 Listed Models : N/A Applicant : Shenzhen Baojia Battery Technology Co.,Ltd. Address : Unit 201, Block A, Building 6th, World Expo Bay South Coast, Heping community, Fuhai Street, Baoan District, Shenzhen, China Manufacturer : Shenzhen Baojia Battery Technology Co.,Ltd. Address : Unit 201, Block A, Building 6th, World Expo Bay South Coast, Heping community, Fuhai Street, Baoan District, Shenzhen, China Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: CTA25112802501 Page 3 of 34 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Contents 1 TEST STANDARDS ...................................................................................................................................... 4 2 SUMMARY .................................................................................................................................................... 5 2.1 General Remarks .............................................................................................................................. 5 2.2 Product Description* .......................................................................................................................... 5 2.3 Equipment Under Test ....................................................................................................................... 5 2.4 Short description of the Equipment under Test (EUT) ...................................................................... 5 2.5 EUT configuration .............................................................................................................................. 5 2.6 EUT operation mode ......................................................................................................................... 5 2.7 Block Diagram of Test Setup ............................................................................................................. 6 2.8 Related Submittal(s) / Grant (s) ......................................................................................................... 6 2.9 Modifications ...................................................................................................................................... 6 3 TEST ENVIRONMENT ................................................................................................................................. 7 3.1 Address of the test laboratory ........................................................................................................... 7 3.2 Test Facility........................................................................................................................................ 7 3.3 Environmental conditions ...........................................................................................…

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1 FCC Appendix RF Test Data for BLE FCC ID : 2A5ZU-BTL308 Company : Shenzhen Baojia Battery Technology Co.,Ltd. EUT : PLAYBULB Sphere Model Number : BTL308 Report No. : CTA25112802501 Reviewed By : Eric Wang 2 Appendix A: DTS Bandwidth Test Result TestMode Antenna Freq(MHz) DTS BW [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict BLE_1M Ant1 2402 0.624 2401.696 2402.320 0.5 PASS 2440 0.632 2439.692 2440.324 0.5 PASS 2480 0.648 2479.688 2480.336 0.5 PASS 3 Test Graphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 4 5 Appendix B: Occupied Channel Bandwidth Test Result TestMode Antenna Freq(MHz) OCB [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict BLE_1M Ant1 2402 1.0051 2401.5170 2402.5221 --- --- 2440 1.0040 2439.5169 2440.5209 --- --- 2480 1.0044 2479.5166 2480.5210 --- --- 6 Test Graphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 7 8 Appendix C: Maximum conducted output power Test Result Peak TestMode Antenna Freq(MHz) Conducted Peak Powert[dBm] Conducted Limit[dBm] Verdict BLE_1M Ant1 2402 0.03 ≤30 PASS 2440 -0.35 ≤30 PASS 2480 -0.38 ≤30 PASS 9 Appendix D: Maximum power spectral density Test Result TestMode Antenna Freq(MHz) Result[dBm/3kHz] Limit[dBm/3kHz] Verdict BLE_1M Ant1 2402 -16.34 ≤8.00 PASS 2440 -15.86 ≤8.00 PASS 2480 -15.80 ≤8.00 PASS 10 Test Graphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 11 12 Appendix E: Band edge measurements Test Result TestMod e Antenn a ChNam e Freq(MHz ) RefLevel[dBm ] Result[dBm ] Limit[dBm ] Verdic t BLE_1M Ant1 Low 2402 -0.40 -52.29 ≤-20.4 PASS High 2480 -0.84 -50.9 ≤-20.84 PASS 13 Test Graphs BLE_1M_Ant1_Low_2402 BLE_1M_Ant1_High_2480 14 Appendix F: Conducted Spurious Emission Test Result TestMode Antenna Freq(MHz) FreqRange [MHz] RefLevel [dBm] Result[dBm] Limit[dBm] Verdict BLE_1M Ant1 2402 Reference -2.02 -2.02 --- PASS 30~1000 -2.02 -66.8 ≤-22.02 PASS 1000~26500 -2.02 -44.26 ≤-22.02 PASS 2440 Reference -1.98 -1.98 --- PASS 30~1000 -1.98 -68.23 ≤-21.98 PASS 1000~26500 -1.98 -41.29 ≤-21.98 PASS 2480 Reference -1.74 -1.74 --- PASS 30~1000 -1.74 -67.23 ≤-21.74 PASS 1000~26500 -1.74 -44.12 ≤-21.74 PASS 15 Test Graphs BLE_1M_Ant1_2402_0~Reference BLE_1M_Ant1_2402_30~1000 BLE_1M_Ant1_2402_1000~26500 16 BLE_1M_Ant1_2440_0~Reference BLE_1M_Ant1_2440_30~1000 17 BLE_1M_Ant1_2440_1000~26500 BLE_1M_Ant1_2480_0~Reference BLE_1M_Ant1_2480_30~1000 18 BLE_1M_Ant1_2480_1000~26500 19 Appendix G: Duty Cycle Test Result TestMode Antenna Freq(MHz) ON Time [ms] Period [ms] X DC [%] xFactor Limit Verdict BLE_1M Ant1 2402 0.41 0.62 0.6613 66.13 1.80 --- --- 2440 0.41 0.62 0.6613 66.13 1.80 --- --- 2480 0.41 0.62 0.6613 66.13 1.80 --- --- 20 Test Graphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 21

FCC ID:2A5ZU-BTL308 Test Setup Photos of the EUT FCC ID:2A5ZU-BTL308