2AVIT-TW600LANC Wireless Earbuds

ATTES TATION STATEMENT Earfun Technology (HK) Limited ADD: FLAT/RM A 9F, SI LVERCORP INTERNATIONAL TOWER 707-713 NATHAN ROAD MONGKOK KL, HONG KONG TEL: +8615989596589 FAX: +8618018710764 E-mail: [email protected] Date: 2024-06-05 F EDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements Part 2.911(d)(5)(i), (ii)Filling FCC ID: 2AVIT-TW600L E arfun Technology (HK) Limited. 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. An d Earfun Technology (HK) Limited. 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. Si ncerely, Printed Name: Rocky Deng Title: Product Director

U.S. AGENT LETTER OF ATTESTATION Date: 2024-06-05 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 R ef: Attestation Statements Part 2.911(d)(7) Filing FCC ID: 2AVIT-TW600L Earfun Technology (HK) Limited certifies that, as of the date of the filing of the app lication, EARFUN, INC (U.S. agent). is our designated U.S. agent for service of process for the above referenced FCC ID. Earfun Technology (HK) Limited 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. EARFUN, INC (U.S. agent) 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 I D. Designated U.S. Agent Information: Name: EARFUN, INC Address: 8605 SANTA MONICA BLVD #79525 WEST HOLLYWOOD, CA 90069-4109 FRN: 0033640855 Tel.: +1(757)6555536 Email: [email protected] Signed by (printed name): ZILI WANG Signature: Ap plicant: Earfun Technology (HK) Limited Add: FLAT/RM A 9F,SILVERCORP INTERNATIONAL TOWER 707-713 NATHAN ROAD MONGKOK KL HONG KONG FRN: 0029085636 TEL: +8615989596589 FAX: +8618018710764 Email: [email protected] Signed by (printed name): Rocky Deng Signature:

Earfun Technology (HK) Limited ADD: FLAT/RM A 9F, SILVERCORP INTERNATIONAL TOWER 707-713 NATHAN ROAD MONGKOK KL, HONG KONG TEL: +8615989596589 FAX: +8618018710764 E-mail: [email protected] FCC Authorization Date: 2024-06-05 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We , Earfun Technology (HK) Limited, Hereby authorizes China Certification ICT Co., Ltd (Dongguan) 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 China Certification ICT Co., Ltd (Dongguan) 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, Client’s signature Printed Name: Rocky Deng Title: Product Director QA-FR-170-B

Earfun Technology (HK) Limited ADD: FLAT/RM A 9F, SILVERCORP INTERNATIONAL TOWER 707-713 NATHAN ROAD MONGKOK KL, HONG KONG TEL: +8615989596589 FAX: +8618018710764 E-mail: [email protected] FCC Confidential Authorization Date: 2024-06-05 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2AVIT-TW600L In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, (Earfun Technology (HK) Limited ) hereby requests long-term confidential treatment of information accompanying this application as outlined below: •Block Diagram •Schematics •Operation Description The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincer ely, Signa ture: Printe d Name: Rocky Deng Title: Product Director QA-FR-171-A

Earfun Technology (HK) Limited ADD: FLAT/RM A 9F, SILVERCORP INTERNATIONAL TOWER 707-713 NATHAN ROAD MONGKOK KL, HONG KONG TEL: +8615989596589 FAX: +8618018710764 E-mail: [email protected] label placement Date: 2024-06-05 To whom it may concern, We, Earfun Technology (HK) Limited, FCC ID: 2AVIT-TW6 00L, hereby submits justification for placing the ID label to the charging box. Because the surface of this device is very smooth, the processing technology is difficult and the device is too small so the ID label cannot to be printed on this device. Unit:mm Sincerely, Signature: Rocky Deng Product Director The measurement of Earphone: Length (33.32.mm)*Width (25.33.mm)*High (21.68mm), The label width: Length (30.71mm)*Width (18.00mm), so the label will be moved to the Charging Case. Below photo will show the detail: Label Charging box Bluetooth headset

China Certification ICT Co., Ltd (Dongguan) Report No.: 2403T76722E-RF-EXP Page 1 of 5 EUT EXTERNAL PHOTOGRAPHS China Certification ICT Co., Ltd (Dongguan) Report No.: 2403T76722E-RF-EXP Page 2 of 5 China Certification ICT Co., Ltd (Dongguan) Report No.: 2403T76722E-RF-EXP Page 3 of 5 China Certification ICT Co., Ltd (Dongguan) Report No.: 2403T76722E-RF-EXP Page 4 of 5 Base China Certification ICT Co., Ltd (Dongguan) Report No.: 2403T76722E-RF-EXP Page 5 of 5

China Certification ICT Co., Ltd (Dongguan) Report No.: 2403T76722E-RF-INP Page 1 of 5 EUT INTERNAL PHOTOGRAPHS China Certification ICT Co., Ltd (Dongguan) Report No.: 2403T76722E-RF-INP Page 2 of 5 Antenna China Certification ICT Co., Ltd (Dongguan) Report No.: 2403T76722E-RF-INP Page 3 of 5 China Certification ICT Co., Ltd (Dongguan) Report No.: 2403T76722E-RF-INP Page 4 of 5 Chip China Certification ICT Co., Ltd (Dongguan) Report No.: 2403T76722E-RF-INP Page 5 of 5 Battery Battery

China Certification ICT Co., Ltd (Dongguan) Report No.:2403T76722E-RF-00A Page 56 of 58 5. RF EXPOSURE EVALUATION 5.1 Applicable Standard According to§15.247(i) and §1.1310, 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 KDB447498 D01 General RF Exposure Guidance v06: 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 • 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm according to 5) in section 4.1 is applied to determine SAR test exclusion. 5.2 Measurement Result The max conducted power including tune-up tolerance is 9 dBm (7.94mW). [(max. power of channel, mW)/(min. test separation distance, mm)][√f(GHz)] =7.94/5*(√2.480) = 2.5< 3.0 Result: Compliant. The stand-alone SAR evaluation is not necessary.

TW600 Ant enna D at e of Issue: 2024-05-17 ES D Sensitive P age (1) of (12) iTD Drawing # 20240517 Revision #: Initial Release S ou rce Control Drawing P ar t Description: B l uetooth TWS headset iT D Part Number: TW600Antenna iTD Software version XHY-TW600-BT-V6.2 iTD Hardware version Cust omer Approval (Pl ease return this copy as a certification of your approval) App roved by: App roval Date: Com pany Seal: PRO PRIETARY NOTICE The se documents, and the contained information herein, are proprietary and are not to be reproduced, used or disclosed to others for manufacture or for any other purpose, except as specifically authorized, in writing, by iTD Corporation. iTD Contact Information: Eric Lin Mb: 1 5 060807099 Em ail: [email protected] Add : RongChenDaChuang building room 302, Dabao Road, Xin ‘an Street 28, Bao An District, Shenzhen City TW600 Antenna Date of Issue: 2024-05-17 ESD Sensitive Page (2) of (12) iTD Drawing # 20240517 Revision #: Initial Release 1,The basic parameters： A. Electrical Characteristics Frequency 2400MHZ~2500MHZ VSWR < 2.5 Avg Efficiency Impedance Polarization Peak Gain 25% 50 ± 25 Ohm L inear 2.4G:-0.51 dBi B. Material & Mechanical Characteristics Material of Radiator FPC black Cable Type / Connector Type / Dimension / C. Environmental Operation Temperature -20 ̊C ~ + 60 ̊C Storage Temperature -30 ̊C ~ + 70 ̊C Number Effective date Change record V1.02024-05-17 Initial release TW600 Antenna Date of Issue: 2024-05-17 ESD Sensitive Page (3) of (12) iTD Drawing # 20240517 Revision #: Initial Release 2,Electrical Specification : Those specifications were specially defined for TW600 model. 3,VSWR 1 Measuring Method 1.A 50Ωcoaxial cable is connected to the antenna. Then this cable is connected to a network analyzer to measure the VSWR 2.Keeping this jig away from metal at least 20cm TW600 Antenna Date of Issue: 2024-05-17 ESD Sensitive Page (4) of (12) iTD Drawing # 20240517 Revision #: Initial Release 4, Anechoic chamber TW600 Antenna Date of Issue: 2024-05-17 ESD Sensitive Page (5) of (12) iTD Drawing # 20240517 Revision #: Initial Release Introduction: Microwave darkroom and no reflection chamber, absorbing short wave darkroom dark room. Microwave darkroom by electromagnetic shielding room, filtering and isolation, grounding device, the ventilation duct, indoor distribution system, monitoring system, ceiling wave material part. It is based on the wave absorbing material as the lining of the shield room, it can absorb the most of the electromagnetic energy into the six wall is a better simulation of the free space conditions. The main working principle of microwave anechoic chamber is according to the electromagnetic wave in the medium from the low magnetic guide magnetic direction of propagation rules, absorbing materials to guide the electromagnetic wave using high permeability, through resonance, a substantial absorption of electromagnetic wave radiation energy, by coupling the electromagnetic energy into heat energy. main performance ： Frequency range:400MHz ~ 6GHz ceiling reflected wave loss materials: 400MHz ~ 6GHz is equal to or more than 15dB (microwave absorbing material by composite wave absorbing materials, namely tapered containing carbon sponge suction wave material paste in ferrite) TW600 Antenna Date of Issue: 2024-05-17 ESD Sensitive Page (6) of (12) iTD Drawing # 20240517 Revision #: Initial Release 5,Gain table of Antenna L gain: OTA TW600 Antenna Date of Issue: 2024-05-17 ESD Sensitive Page (7) of (12) iTD Drawing # 20240517 Revision #: Initial Release TW600 Antenna Date of Issue: 2024-05-17 ESD Sensitive Page (8) of (12) iTD Drawing # 20240517 Revision #: Initial Release -L TRP TIS TW600 Antenna Date of Issue: 2024-05-17 ESD Sensitive Page (9) of (12) iTD Drawing # 20240517 Revision #: Initial Release R TRP TIS TW600 A ntenna D ate of Issue: 2024-05-17 E SD Sensitive P age (10) of (12) i TD Drawing # 20240517 Revision #: Initial Release 6,Ma chine Picture ： TW600 A ntenna D ate of Issue: 2024-05-17 E SD Sensitive P age (11) of (12) i TD Drawing # 20240517 Revision #: Initial Release 7, A ntenna Dimension unit:26.42*13.93*6.20 mm TW600 Antenna Date of Issue: 2024-05-17 ESD Sensitive Page (12) of (12) iTD Drawing # 20240517 Revision #: Initial Release 8,ROHS: Antenna TX.10.0251-TW600 meets RoHS requirements. 9, Product packaging instructions: A.packing should meet the moistureproof, vibration, pressure and mildew proof, etc. B. the smallest packing unit logo must have the manufacturer trademarks, product model, name, code and quantity. C. in the attached packing list, certificate of approval, and the factory inspection report. ***************************END****************************

TEST REPORT Applicant: Earfun Technology (HK) Limited Address: FLAT/RM A 9F, SILVERCORP INTERNATIONAL TOWER 707-713 NATHAN ROAD MONGKOK KL, HONG KONG FCC ID: 2AVIT-TW600L Product Name: ANC Wireless Earbuds Standard(s): 47 CFR Part 15, Subpart C(15.247) ANSI C63.10-2013 KDB 558074 D01 15.247 Meas Guidance v05r02 The above device has been tested and found compliant with the requirement of the relative standards by China Certification ICT Co., Ltd (Dongguan) Report Number: 2403T76722E-RF-00A Date Of Issue: 2024/6/11 Reviewed By: Calvin Chen Title: RF Engineer Approved By: Sun Zhong Title: Manager Test Laboratory: China Certification ICT Co., Ltd (Dongguan) No. 113, Pingkang Road, Dalang Town, Dongguan, Guangdong, China Tel: +86-769-82016888 China Certification ICT Co., Ltd (Dongguan) Report No.:2403T76722E-RF-00A Page 2 of 58 Test Facility The Test site used by China Certification ICT Co., Ltd (Dongguan) to collect test data is located on the No. 113, Pingkang Road, Dalang Town, Dongguan, Guangdong, China. The lab has been recognized as the FCC accredited lab under the KDB 974614 D01 and is listed in the FCC Public Access Link (PAL) database, FCC Registration No. : 442868, the FCC Designation No. : CN1314. Declarations China Certification ICT Co., Ltd (Dongguan) 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 a triangle symbol “▲”. Customer model name, addresses, names, trademarks etc. are not considered data. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report cannot be reproduced except in full, without prior written approval of the Company. 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. This report may contain data that are not covered by the accreditation scope and shall be marked with an asterisk “★”. China Certification ICT Co., Ltd (Dongguan) Report No.:2403T76722E-RF-00A Page 3 of 58 CONTENTS DOCUMENT REVISION HISTORY .......................................................................................... 5 1. GENERAL INFORMATION .................................................................................................... 6 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ....................................................... 6 1.2 DESCRIPTION OF TEST CONFIGURATION ........................................................................................... 7 1.2.1 EUT Operation Condition: ............................................................................................................................. 7 1.2.2 Support Equipment List and Details .............................................................................................................. 7 1.2.3 Support Cable List and Details ...................................................................................................................... 7 1.2.4 Block Diagram of Test Setup ......................................................................................................................... 8 1.3 MEASUREMENT UNCERTAINTY .......................................................................................................... 9 2. SUMMARY OF TEST RESULTS .......................................................................................... 10 3. REQUIREMENTS AND TEST PROCEDURES .................................................................. 11 3.1 AC LINE CONDUCTED EMISSIONS .................................................................................................... 11 3.1.1 Applicable Standard ..................................................................................................................................... 11 3.1.2 EUT Setup.................................................................................................................................................... 12 3.1.3 EMI Test Receiver Setup ............................................................................................................................. 12 3.1.4 Test Procedure ............................................................................................................................................. 13 3.1.5 Corrected Amplitude & Margin Calculation ................................................................................................ 13 3.2 RADIATION SPURIOUS EMISSIONS .................................................................................................... 14 3.2.1 Applicable Standard ..................................................................................................................................... 14 3.2.2 EUT Setup.................................................................................................................................................... 14 3.2.3 EMI Test Receiver & Spectrum Analyzer Setup ......................................................................................... 15 3.2.4 Test Procedure ............................................................................................................................................. 16 3.2.5 Corrected Amplitude & Margin Calculation ................................................................................................ 16 3.3 MINIMUM 6 DB BANDWIDTH ............................................................................................................. 17 3.3.1 Applicable Standard ..................................................................................................................................... 17 3.3.2 EUT Setup.................................................................................................................................................... 17 3.3.3 Test Procedure .................................................................…

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China Certification ICT Co., Ltd (Dongguan) Report No.: 2403T76722E-RF-00A-TSP TEST SETUP PHOTOGRAPHS Radiated Emission 30 MHz-1 GHz View Radiated Emission 30 MHz-1 GHz View China Certification ICT Co., Ltd (Dongguan) Report No.: 2403T76722E-RF-00A-TSP Radiated Emission 9 kHz-30 MHz Parallel View Radiated Emission 9 kHz-30 MHz Perpendicular View China Certification ICT Co., Ltd (Dongguan) Report No.: 2403T76722E-RF-00A-TSP Radiated Emission 9 kHz-30 MHz Ground-parallel View Radiated Emission 1GHz-18GHz View China Certification ICT Co., Ltd (Dongguan) Report No.: 2403T76722E-RF-00A-TSP Radiated Emission 18GHz-25GHz View Radiated Emission Above 1GHz View