2A2H6-MU01041Bluetooth headphone

C -1(One) X 6.7in. X 3.15in. X 7.48in. (17cm X 8cm X 19cm) -1(One) X 5.9in.(15cm) -1(One) X Instruction A prompt sound will be heard. TYPE-C TYPE-C Trinity BT LED Headphone a H 180 TRINITY BT HEADPHONE turn between 2A2H6-MU01041 No power protection device at the input MU01041

Shenzhen Bao Tianhua Technology Co., Ltd. Add: 301, Building Plant No.5 Anliang Road, Xi Keng Community, Longgang District,Shenzhen, Guangdong, China Tel: 0755‐28678596 E‐MAIL: [email protected] Date: 06/26/2023 To: FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 We, Shenzhen Bao Tianhua Technology Co., Ltd. hereby declare that： Product Name: Bluetooth headphone Model No.: MU01041 FCC ID: 2A2H6-MU01041 For BT Mode: BLE 1M/2M ; are disable by software For Below are activated: Bluetooth BDR(GFSK) , EDR(π/4‐DQPSK), EDR(8DPSK) Except for the manufacturer, the end user does not have any capability to modify/change the RF parameters. We acknowledge that it is the manufacturer’s responsibility to provide the radio configurations to ensure compliance with Commission’s rules. Sincerely Yours, Signature: Printed Name: Ray Lei Title: Manager

CFR 47 §2.911(d)(5)(i) Attestation Letter QA-FR-1006-A RC 02-08-2023 Shenzhen Bao Tianhua Technology Co., Ltd. Add: 301, Building Plant No.5 Anliang Road, Xi Keng Community, Longgang District,Shenzhen, Guangdong, China Tel: 0755‐28678596 E‐MAIL: [email protected] Attestation Letter Date: 6/26/2023 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(i) Filing FCC ID: 2A2H6-MU01041 Shenzhen Bao Tianhua Technology Co., Ltd. (“the applicant”) certifies 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. Sincerely, Signature Contact Person: Ray Lei Title: Manager Company Name: Shenzhen Bao Tianhua Technology Co., Ltd. Address: 301, Building Plant No.5 Anliang Road, Xi Keng Community, Longgang District,Shenzhen, Guangdong, China

CFR 47 §2.911 (d)(5)(ii) Attestation Letter QA-FR-1007-A RC 02-08-2023 Shenzhen Bao Tianhua Technology Co., Ltd. Add: 301, Building Plant No.5 Anliang Road, Xi Keng Community, Longgang District,Shenzhen, Guangdong, China Tel: 0755‐28678596 E‐MAIL: [email protected] Attestation Letter Date: 6/26/2023 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(ii) Filing FCC ID: 2A2H6-MU01041 Shenzhen Bao Tianhua Technology Co., Ltd. (“the applicant”) certifies 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. Sincerely, Signature Contact Person: Ray Lei Title: Manager Company Name: Shenzhen Bao Tianhua Technology Co., Ltd. Address: 301, Building Plant No.5 Anliang Road, Xi Keng Community, Longgang District,Shenzhen, Guangdong, China

U.S. AGENT LETTER OF ATTESTATION Date: 2023-06-26 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(7) Filing FCC ID: 2A2H6-MU01041 Shenzhen Bao Tianhua Technology Co., Ltd. (“the Applicant”) certifies that, as of the date of the filing of the application, Iconsigh Inc. is our designated U.S. agent for service of process for the above referenced FCC ID. Shenzhen Bao Tianhua Technology Co., Ltd. (“the Applicant”) accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Iconsigh Inc. accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information: Company Name: Iconsigh Inc. Address: 2310 Homestead Road, Suite C1, Los Altos, CA, 94024, USA FRN: 0033398652 Tel.: +1 (408) 320-9867 Email: [email protected] Signed by (printed name): Benjamin Kaur Signature: Applicant: Shenzhen Bao Tianhua Technology Co., Ltd. Address: 301, Building Plant No.5 Anliang Road, Xi Keng Community, Longgang District,Shenzhen, Guangdong, China FRN: 0031094535 Tel: 0755‐28678596 Email: [email protected] Signed by (printed name): Ray Lei Signature:

1 1 2 2 3 3 4 4 DD CC BB AA Bluetooth chip LED SPK ch ar g i n g ci r cu i t B a t t e r y 3 . 7 V ANT 2.4G MIC KEY 26MHZ AUX AB5616B 2402-2480MHz Crystal

Shenzhen Bao Tianhua Technology Co., Ltd. Add: 301, Building Plant No.5 Anliang Road, Xi Keng Community, Longgang District,Shenzhen, Guangdong, China Tel: 0755‐28678596 E‐MAIL: [email protected] FCC Authorization 06/26/2023 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We,Shenzhen Bao Tianhua Technology Co., Ltd. the undersigned, hereby authorize Shenzhen Accurate Technology Co., Ltd to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Shenzhen Accurate Technology Co., Ltd on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, Signature: Printed Name: Ray Lei Title: Manager

Shenzhen Bao Tianhua Technology Co., Ltd. Add: 301, Building Plant No.5 Anliang Road, Xi Keng Community, Longgang District,Shenzhen, Guangdong, China Tel: 0755‐28678596 E‐MAIL: [email protected] 06/26/2023 Product Similarity Declaration FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern, We, Shenzhen Bao Tianhua Technology Co., Ltd. hereby declare that we have a product named as Bluetooth headphone (Model No.: MU01041 ) FCC ID: 2A2H6-MU01041 was tested by Shenzhen Accurate Technology Co., Ltd, meanwhile, for our marketing purpose, we would like to list a series products on reports and certificate, all the Products are identical in electrically, except for the difference of color appearance.No other changes are made to them. We confirm that all information above is true, and we’ll be responsible for all the consequences. Please contact me if you have any question. Sincerely Yours, Signature: Printed Name: Ray Lei Title: Manager

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Shenzhen Accurate Technology Co., Ltd. Project No.: RA230525-29214E-RF LABEL AND LOCATION Page 1 of 1 FCC ID Label FCC ID Label Location Information The label shown shall be permanently affixed at a conspicuous location on the device and be readily visible to the user at the time purchase (Labeling requirements per 2.925)

Shenzhen Accurate Technology Co., Ltd. Project No.: RA230525-29214E-RF Internal Photos Page 1 of 4 Internal photos Shenzhen Accurate Technology Co., Ltd. Project No.: RA230525-29214E-RF Internal Photos Page 2 of 4 Shenzhen Accurate Technology Co., Ltd. Project No.: RA230525-29214E-RF Internal Photos Page 3 of 4 Shenzhen Accurate Technology Co., Ltd. Project No.: RA230525-29214E-RF Internal Photos Page 4 of 4

Circuit Description Battery (DC 3.7V) provides energy for the Bluetooth chip (AB5616B); Crystal oscillator (26MHz) provides the clock signal for the Bluetooth chip. Bluetooth signals get through a matching circuit, and then transmitted to the space through the antenna (2402-2480MHz). When the product is connected, the product can in two-way communication with other Bluetooth Devices, and then the device’s Bluetooth module sends Bluetooth signals into space, the product receives the Bluetooth signal through an antenna, transmission to the Bluetooth chip via matching circuit. Modulation Technique: Bluetooth: GFSK, π/4-DQPSK, 8DPSK

Shenzhen Accurate Technology Co., Ltd. Report No.: RA230525-29214E-RF-00A Version 7: 2023-01-30 Page 12 of 56 FCC-BT FCC§15.247 (i), §1.1307 (b) &§2.1093 – RF EXPOSURE Applicable Standard According to FCC §2.1093 and §1.1307(b) (1), systems operating under the provisions of this section shall be operated in a manner that ensure that the public is not exposed to radio frequency energy level in excess of the Commission’s guideline. According to KDB 447498 D01 General RF Exposure Guidance 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 1. f(GHz) is the RF channel transmit frequency in GHz. 2. Power and distance are rounded to the nearest mW and mm before calculation. 3. The result is rounded to one decimal place for comparison. 4. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test Exclusion. Measurement Result Mode Frequency (MHz) Max tune-up conducted power* (dBm) Max tune-up conducted power* (mW) Distance (mm) Calculated value Threshold (1-g SAR) SAR Test Exclusion BT 2402-2480 4.0 2.51 5 0.8 3.0 Yes Note: The tune-up power was declared by the applicant. Result: No Standalone SAR test is required

1 1 2 2 3 3 4 4 DD CC BB AA AB5616B QFN20-3*3 POWER KEY Earphone S1 VOL- GND S3 NEXT/VOL+ S2 POWER/PP GND upDate LED + M2 GND MIC MIC VUSB R11R X1 26MHZ GND OSCO OSCI upDate1 V D D D A C C 8 1 0 5 V C M B U F D A C L M I C I N C6 10uF V D D B T GND P W R K E Y GND C7 105 GND VUSB VDDIO VBAT C1225 C310uF C2105 GND L1 10uH V D D B T BLUE_LED CHRG_LED GND GND V D D B T 1 0 V D D B T 7 P W R K E Y 8 LX 5 D G N D 6 VBAT 4 VUSB 2 D A C R 1 8 A D C 1 0 / M I C / P F 2 1 6 BT_OSCI 11 BT_OSCO 12 B T _ A N T 9 VDDIO 3 V C M B U F 1 9 AGND 1 RFGND 0 D A C L 1 7 V D D D A C 2 0 ADC6/PB4 13 ADC5/PB3 14 ADC2/PA7 15 U1 AB5616B QFN20 3*3 D A C R R2 12K DET GND 1 VCC 2 CC1 3 CC2 4 VCC 5 GND 6 TYPE-C GND R4 NC R5 NC GND GND R3 47K PWRKEY 3.3V-4.2V Battery GND BLUE_LED GND GND LED2RED LED1BLUE CHRG_LED 2 4 1 3 J2 AUX DET DACR DACL VCMBUF MICIN SPKL SPKR PI303V0402V01 PI303V0402V02 CO303V0402V PIBT0ANT101 PIBT0ANT102 COBT0ANT1 PIC101PIC102 COC1 PIC201PIC202 COC2 PIC301PIC302 COC3 PIC601 PIC602 COC6 PIC701 PIC702 COC7 PIC801 PIC802 COC8 PIJ201 PIJ202 PIJ203 PIJ204 COJ2 PIL101 PIL102 COL1 PILED10APILED10K COLED1 PILED20APILED20K COLED2 PILOUT101 COLOUT1 PILOUT#101 COLOUT#1 PIM201 PIM202 COM2 PIR101PIR102 COR1 PIR201PIR202 COR2 PIR301PIR302 COR3 PIR401PIR402 COR4 PIR501PIR502 COR5 PIROUT101 COROUT1 PIROUT#101 COROUT#1 PIS101PIS102 COS1 PIS201PIS202 COS2 PIS301PIS302 COS3 PITYPE0C01 PITYPE0C02 PITYPE0C03 PITYPE0C04 PITYPE0C05 PITYPE0C06 COTYPE0C PIU100 PIU101 PIU102 PIU103 PIU104 PIU105 PIU106PIU107PIU108PIU109PIU1010 PIU1011 PIU1012 PIU1013 PIU1014 PIU1015 PIU1016PIU1017PIU1018PIU1019PIU1020 COU1 PIupDate101 COupDate1 PIX101 PIX102 PIX103 PIX104 COX1 PILED10A PIU1014PIupDate101 NLBLUE0LED PILED20A PIU1013 NLCHRG0LED PIJ203PILOUT101 PIU1017 NLDACL PIJ204PIROUT101 PIU1018 NLDACR PIJ202 PIU1015 NLDET PI303V0402V02 PIBT0ANT102 PIC101 PIC201 PIC301 PIC602PIC701 PIC802 PILED10K PILED20K PIM202 PIR402 PIR502 PIS102 PIS202 PIS302 PITYPE0C01 PITYPE0C06 PIU100 PIU101 PIU106 PIX102 PIX104 PIU1016 NLMICIN PIBT0ANT101 PIU109 PIL102 PIU105 PIM201 PIR101PITYPE0C02 PITYPE0C05 PIR202PIS101 PIR302PIS301 PIR401PITYPE0C03 PIR501PITYPE0C04 PIU1011 PIX101 NLOSCI PIU1012 PIX103 NLOSCO PIR201 PIR301 PIS201 PIU108 NLPWRKEY PI303V0402V01 PIC102PIU104 NLVBAT PIJ201 PILOUT#101PIROUT#101 PIU1019 NLVCMBUF PIC601PIC702 PIL101 PIU107PIU1010 NLVDDBT PIC801 PIU1020 NLVDDDAC PIC202PIU103 NLVDDIO PIC302 PIR102 PIU102 NLVUSB

Inverted F Antenna Specification Summary ITEM ANT SPEC Model Name 2.4G ANT Frequency(MHz) 2400 2410 2430 2440 2470 2500 -1.26 -0.98 -0.76 -0.82 -1.06 -1.66 MAX. Gain -0.68dBi Polarization Horizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance 50 Ohm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Antenna Photo & Length (mm) 7th floor, Fuhua Science and Technology Building, North Ring Avenue, Xili Street, Nanshan District, Shenzhen Gain(dBi) 2420 -0.89 -0.68 24502460 -0.97 2480 -1.12 2490 -1.35 3D Radiation Pattern 2400MHz 2450MHz 2500MHz

★ Note: This report may contain data that are not covered by the A2LA accreditation and are marked with an asterisk “ ”. Shenzhen Accurate Technology Co., Ltd. is not responsible for the authenticity of any test data provided by the applicant. Data included from the applicant that may affect test results are marked with an asterisk ’*’. Customer model name, addresses, names, trademarks etc. are not considered data. This report cannot be reproduced except in full, without prior written approval of the Company. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. Shenzhen Accurate Technology Co., Ltd. 1/F., Building A, Changyuan New Material Port, Science & Industry Park, Nanshan District, Shenzhen, Guangdong, P.R. China Tel: +86 755-26503290 Fax: +86 755-26503290 Web: www.atc-lab.com Version 7: 2023-01-30 Page 1 of 56 FCC-BT TEST REPORT Applicant Name : Shenzhen Bao Tianhua Technology Co., Ltd. Address : 301, Building Plant No.5 Anliang Road, Xi Keng Community, Longgang District,Shenzhen, Guangdong, China Report Number : RA230525-29214E-RF-00A FCC ID: 2A2H6-MU01041 Test Standard (s) FCC PART 15.247 Sample Description Product Type: Bluetooth headphone Model No.: MU01041 Multiple Model(s) No.: N/A Trade Mark: N/A Date Received: 2023/05/25 Report Date: 2023/06/02 Test Result: Pass* * In the configuration tested, the EUT complied with the standards above. Prepared and Checked By: Approved By: Dave Liang Candy Li EMC Engineer EMC Engineer Shenzhen Accurate Technology Co., Ltd. Report No.: RA230525-29214E-RF-00A Version 7: 2023-01-30 Page 2 of 56 FCC-BT TABLE OF CONTENTS DOCUMENT REVISION HISTORY ......................................................................................................................... 4 GENERAL INFORMATION ....................................................................................................................................... 5 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 5 OBJECTIVE ................................................................................................................................................................... 5 TEST METHODOLOGY .................................................................................................................................................. 5 MEASUREMENT UNCERTAINTY .................................................................................................................................... 6 TEST FACILITY ............................................................................................................................................................. 6 SYSTEM TEST CONFIGURATION .......................................................................................................................... 7 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 7 EUT EXERCISE SOFTWARE .......................................................................................................................................... 7 SPECIAL ACCESSORIES ................................................................................................................................................. 7 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 7 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................................................... 7 EXTERNAL I/O CABLE .................................................................................................................................................. 7 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 8 SUMMARY OF TEST RESULTS ............................................................................................................................... 9 TEST EQUIPMENT LIST ......................................................................................................................................... 10 FCC§15.247 (I), §1.1307 (B) &§2.1093 – RF EXPOSURE .......................................................................................... 12 APPLICABLE STANDARD ............................................................................................................................................ 12 FCC §15.203 – ANTENNA REQUIREMENT .......................................................................................................... 13 APPLICABLE STANDARD ............................................................................................................................................ 13 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 13 FCC §15.205, §15.209 & §15.247(D) – RADIATED EMISSIONS .......................................................................... 14 APPLICABLE STANDARD ............................................................................................................................................ 14 EUT SETUP ................................................................................................................................................................ 14 EMI TEST RECEIVER & SPECTRUM ANALYZER SETUP .............................................................................................. 15 TEST PROCEDURE .........................................................................................................…

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Shenzhen Accurate Technology Co., Ltd. Project No.: RA230525-29214E-RF Test Photos Page 1 of 1 Photo of Radiated Emission Measurement (Below 1G) Photo of Radiated Emission Measurement (Above 1G)