2AFAX-RHYTHUMBLUETOOTH SPEAKER

DATE : 2022-1-18 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2AFAX-RHYTHUM Product Name: BLUETOOTH SPEAKER 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. <Signature>: Name: Prem Balani Title: Co-Founder Applicant Company: BOOMPODS (HK) LTD.

DATE:2022-1-18 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act asAgent Onourbehalf,Iappoint DONGGUAN SHUOXIN ELECTRONIC TECHNOLOGY CO., LTD. Zone A, 1F, No. 6, XinGang Road YuanGang Street, XinAn District, ChangAn Town, DongGuan City, GuangDong, China (Name of Agent company name andaddress)toactasouragentinthepreparationofthisapplicationforequipmentcertification.Icer tifythatsubmitteddocumentsproperlydescribethedeviceorsystemforwhichequipmentcertificat ionissought.Ialsocertifythateachunitmanufactured,importedormarketed,asdefinedintheFede ralCommunicationsCommission’sregulationswillhaveaffixedtoit a label identical to that submitted for approval with this application. Forinstanceswhereourauthorizedagentsignstheapplicationforcertificationonourbehalf,Iack nowledgethatallresponsibilityforcomplyingwiththetermsandconditionsforcertification,stillres ideswith BOOMPODS (HK) LTD. RM 303 Hankow Centre 5-15, Hankow Road T.S.T. Kowloon, HONG KONG. <Signature> Name: Prem Balani Title: Co-Founder Applicant Company: BOOMPODS (HK) LTD.

External photos END

Internal photos Antenna END

RF Exposure evaluation According to 447498 D01 General RF Exposure Guidance v05 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 Worse case is as below: [2480 MHz 3.2dBm（ 4.736 mW）output power] (2.09 mW /5mm) ·[√2.480(GHz)]= 0.66 <3.0 for 1-g SAR Then SAR evaluation is not required

FCC Radio Test Report FCC ID: 2AFAX-RHYTHUM The report concerns: Original Grant Report Reference No. ................. : 21EFSS12026 00021 Date Sample(s) Received ........... : 2021-12-07 Date of Tested ............................. : From 2021-12-25 to 2022-01-04 Date of issue ............................... : 2022-01-05 Testing Laboratory ...................... : DongGuan ShuoXin Electronic Technology Co., Ltd. Address ...................................... : Zone A, 1F, No. 6, XinGang Road YuanGang Street, XinAn District, ChangAn Town, DongGuan City, GuangDong, China Applicant’s name ........................ : BOOMPODS (HK) LTD. Address ...................................... : RM 303 Hankow Centre 5-15, Hankow Road T.S.T.Kowloon, HONG KONG. Manufacturer............................... : Dongguan Linyar Technology Co., Ltd. Equipment................................... : BLUETOOTH SPEAKER Trade Mark ................................. : Model ........................................ : RHYTHM Ratings ....................................... : I/P: DC 5V for USB-Micro; DC 3.7V for Li-ion battery(1800mAh) O/P: -- Test Engineer: Blue Qiu Responsible Engineer : Smile Wang Authorized Signatory: King Wang Report No.: 21EFSS12026 00021 Page 2 of 60 Table of Contents Page 1 TEST REPORT DECLARE 4 2 SUMMARY OF TEST RESULTS 5 2.1 MEASUREMENT UNCERTAINTY 6 3 GENERAL INFORMATION 7 3.1 GENERAL DESCRIPTION OF EUT 7 3.2 DESCRIPTION OF TEST MODES 9 3.3 PARAMETERS OF TEST SOFTWARE 10 3.4 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 10 3.5 SUPPORT UNITS 10 3.6 TEST ENVIRONMENT CONDITIONS 11 4 AC POWER LINE CONDUCTED EMISSIONS TEST 12 4.1 LIMIT 12 4.2 TEST PROCEDURE 12 4.3 MEASUREMENT INSTRUMENTS LIST 12 4.4 TESTSETUP 13 4.5 EUT OPERATING CONDITIONS 13 4.6 TEST RESULTS 14 5 RADIATED EMISSION TEST 16 5.1 LIMIT 16 5.2 TEST PROCEDURE AND SETTING 17 5.3 MEASUREMENT INSTRUMENTS LIST 18 5.4 TESTSETUP 18 5.5 EUT OPERATING CONDITIONS 19 5.6 TEST RESULTS - 9 KHZ TO 30MHZ 20 5.7 TEST RESULTS- 30 MHZ TO 1000MHZ 21 5.8 TEST RESULTS - ABOVE 1000MHZ (BAND EDGE) 23 5.9 TEST RESULTS - ABOVE 1000MHZ(HARMONIC) 31 6 NUMBER OF HOPPING FREQUENCY 43 6.1 LIMIT 43 6.2 TEST PROCEDURE AND SETTING 43 6.3 MEASUREMENT INSTRUMENTS LIST 43 6.4 TEST SETUP 43 6.5 EUT OPERATION CONDITIONS 43 6.6 TEST RESULTS 44 7 AVERAGE TIME OF OCCUPANCY 45 7.1 LIMIT 45 7.2 TEST PROCEDURE AND SETTING 45 7.3 MEASUREMENT INSTRUMENTS LIST 45 7.4 TEST SETUP 45 7.5 EUT OPERATION CONDITIONS 45 7.6 TEST RESULTS 46 8 HOPPING CHANNEL SEPARATION MEASUREMENT 48 8.1 LIMIT 48 Report No.: 21EFSS12026 00021 Page 3 of 60 Table of Contents Page 8.2 TEST PROCEDURE AND SETTING 48 8.3 MEASUREMENT INSTRUMENTS LIST 48 8.4 TEST SETUP 48 8.5 EUT OPERATION CONDITIONS 48 8.6 TEST RESULTS 49 9 BANDWIDTH TEST 51 9.1 LIMIT 51 9.2 TEST PROCEDURE AND SETTING 51 9.3 MEASUREMENT INSTRUMENTS LIST 51 9.4 TEST SETUP 51 9.5 EUT OPERATION CONDITIONS 51 9.6 TEST RESULTS 52 10 MAXIMUM OUTPUT POWER 54 10.1 LIMIT 54 10.2 TEST PROCEDURE AND SETTING 54 10.3 MEASUREMENT INSTRUMENTS LIST 54 10.4 TEST SETUP 54 10.5 EUT OPERATION CONDITIONS 54 10.6 TEST RESULTS 55 11 CONDUCTED SPURIOUS EMISSION 58 11.1 LIMIT 58 11.2 TEST PROCEDURE AND SETTING 58 11.3 MEASUREMENT INSTRUMENTS LIST 58 11.4 TEST SETUP 58 11.5 EUT OPERATION CONDITIONS 58 11.6 TEST RESULTS 59 Report No.: 21EFSS12026 00021 Page 4 of 60 1TEST REPORT DECLARE Applicant BOOMPODS (HK) LTD. Address RM 303 Hankow Centre 5-15, Hankow Road T.S.T.Kowloon, HONG KONG. Manufacturer Dongguan Linyar Technology Co.,Ltd. Address No.2, PujiangRoad, DaningCommunity, Humen, Dongguan, Guangdong, China. Factory Dongguan Linyar Technology Co.,Ltd. Address No.2, PujiangRoad, DaningCommunity, Humen, Dongguan, Guangdong, China. Equipment BLUETOOTH SPEAKER Model No. RHYTHM Trade Mark Standard FCC Part15, Subpart C (15.247) ANSI C63.10-2013 We Declare: The equipment described above is tested by DongGuan ShuoXin Electronic Technology Co., Ltd(ATT). and in the configuration tested the equipment complied with the standards specified above. The test results are contained in this test report and DongGuan ShuoXin Electronic Technology Co., Ltd.(ATT) is assumed of full responsibility for the accuracy and completeness of these tests. ATT is not responsible for the sampling stage, so the results only apply to the sample as received. ATT's reports apply only to the specific samples tested under conditions. It is manufacture’s responsibility to ensure that additional production units of this model are manufactured with the identical electrical and mechanical components. ATT shall have no liability for any declarations, inferences or generalizations drawn by the client or others from ATT issued reports. Report No.: 21EFSS12026 00021 Page 5 of 60 2SUMMARY OF TEST RESULTS The EUT have been tested according to the applicable standards as referenced below: Standard(s) Section Test Item Judgment Remark FCC 15.207 AC Power Line Conducted Emissions PASS ------ 15.247(d) 15.205(a) 15.209(a) Radiated Emission PASS ------ 15.247(a)(1)(iii) Number of Hopping Frequency PASS ------ 15.247(a)(1)(iii) Average Time Of Occupancy PASS ------ 15.247(a)(1) Hopping Channel Separation PASS ------ 15.247(a)(1) Bandwidth PASS ------ 15.247(a)(1) Maximum Output Power PASS ------ 15.247(d) Conducted Spurious Emission PASS ------ 15.203 Antenna Requirement PASS Note(2) Note: (1) “N/A” denotes test is not applicable in this test report (2) The device what use a permanently attached antenna were considered sufficient to comply with the provisions of 15.203. Report No.: 21EFSS12026 00021 Page 6 of 60 2.1MEASUREMENT UNCERTAINTY Test Item Uncertainty Uncertainty for Conduction emission test (9kHz-150kHz) 3.7 dB Uncertainty for Conduction emission test (150kHz-30MHz) 3.3 dB Uncertainty for Radiation Emission test (30MHz-200MHz) 4.60 dB (Polarize: V) 4.60 dB (Polarize: H) Uncertainty for Radiation Emission test (200MHz-1GHz) 6.10 dB (Polarize: V) 5.08 dB (Polarize: H) Uncertainty for Radiation Emission test …

Text truncated - open the document above for the full version.

Test Setup Below 1GHz Above 1GHz Conduction Setup END