2A62Y-R8R9R10Bone Conduction Wireless Headphones

Shenzhen xingming Technology Co.,ltd Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: July 3, 2023 FCC ID: 2A62Y-R8R9R10 Ref. #1: Attestation Statements Part 2.911(d)(5)(i) Filing Shenzhen xingming Technology Co.,ltd 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. Ref. #2: Attestation Statements Part 2.911(d)(5)(ii) Filing Shenzhen xingming Technology Co.,ltd 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. Applicant: Shenzhen xingming Technology Co.,ltd Address: Room409-410, 9#Zijing Garden Dalang Huahui Road, Longhua District, Shenzhen, Guangdong Province, China Contact Person: Yan Zhao Tel.: +86-755-26544737 Email: [email protected] Sincerely, Signature:

Shenzhen xingming Technology Co.,ltd U.S. Agent Letter of Attestation To: Federal Communications Commission 7435 Oakland Mills Road, Columbia, MD 21046, USA Date: 2023-07-03 Ref: Attestation Statement – Part 2.911(d)(7) filing FCC ID: 2A62Y-R8R9R10 Shenzhen xingming Technology Co.,ltd(“the applicant”) certifies that, as of the date of the filing of the application, CLF Import and Export Limited (“the agent”) is our designated U.S. agent for service of process for the above reference FCC ID. The applicant accepts 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. The applicant further acknowledges it is our responsibility to inform the FCC whenever the agent information changes. CLF Import and Export Limited ("the agent) understand it is the agent's obligation to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address. Designated U.S. Agent Company Name: CLF Import and Export Limited FRN: 0033489683 Address: 1312 17th Street #692, Denver, CO 80202, United States Signature: Contact Person: David Chen Tel: +1 949 254 2565 Email: [email protected] Applicant Company Name: Shenzhen xingming Technology Co.,ltd Address: Room409-410, 9#Zijing Garden Dalang Huahui Road, Longhua District, Shenzhen, Guangdong Province, China Signature: Contact Person: Yan Zhao Tel: +86-755-26544737 Email: [email protected]

Shenzhen xingming Technology Co.,ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: July 3, 2023 Subject; Request for Confidentiality FCC ID: 2A62Y-R8R9R10 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure Software Security Requirements for UNII devices In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Yan Zhao Title: Manager

Shenzhen xingming Technology Co.,ltd Model Difference Statement Dear Sir/Madam, Added models R9, R10 basis of the original product R8. The color of appearance and model name of series models listed are different from the main model, but the circuit and the electronic construction are the same, declared by the manufacturer. Sincerely, Name: Yan Zhao Title: Manager Company name: Shenzhen xingming Technology Co.,ltd Address: Room409-410, 9#Zijing Garden Dalang Huahui Road, Longhua District, Shenzhen, Guangdong Province, China

2.4GHz 3216 Chip Antenna: HT-3216-C07 _ Application: WLAN, 802.11b/g, Bluetooth, WLAN, etc... Features SMD, high reliability, ultra Impact, Omni-directional... Part number Information F245 C 07 HT (A) (C) (D)(E) (F) Electrical Specification The specification is defined on EVB. Dimension and Terminal Configuration No.Terminal Name 1Feeding/GNG 2GND/Feeding (A)Product TypeChip Antenna (B) Size Code 3.2x1.6mm( ± 0.2mm) (C) MaterialHigh K material (D) Frequency2.4 ~ 2.5GHz (E) Feeding modePIFA & Single Feeding (F) Antenna typeType=01 Working Frequency Range2400 ~2500 MHz Bandwidth120 MHz (Min.) Peak Gain 1.24 dBi Impedance50 Ohm Return loss10 dB ( Min) PolarizationLinear Azimuth BeamwidthOmni-directional Operation Temperature(°C)-40 ~85°C Resistance to Soldering Heats 10sec. ( @ 280°C) TerminationNi / Au (Leadless) Dimension (mm) L 3.20±0.20 W 1.60±0.20 T 0.45±0.20 電話: 18665849001 TEL: 18665934465 3216 (B) 深圳市合拓科技有限公司 Shenzhen Hetuo Technology Co.,Ltd. 2.4GHz 3216 Chip Antenna: HT-3216-C07 _ 1 Evaluation BoardReference PCB DimensionAntenna Layout Reference Unit :mm Electrical Characteristics Return Loss & Radiation Return Loss Frequency(MHz) S11(dB) 2400-10.50 2450-30.62 2500-11.47 Radiation 2400MHz 2450MHz 2500MHz Efficiency82.52%85.26%83.01% Peak Gain1.15 dBi1.24 dBi1.19 dBi Directivity1.89 dBi1.97 dBi1.91 dBi X Y Z 2400MHz 2450MHz 2500MHz 深圳市合拓科技有限公司 Shenzhen Hetuo Technology Co.,Ltd. 2.4GHz 3216 Chip Antenna: HT-3216-C07 _ Taping Specifications Reel and Taping Specification Reel Specification TYPESIZEABCD 32167” 5K/Reel 9.0±0.5 60±213.5±0.5178±2 Tapping Specification PackagingTypeABWEFGHTψDP Paper Type 3216 1.90±0.20 3.50±0.20 8.0±0.20 1.75±0.10 3.5±0.05 4.0±0.10 2.0±0.05 0.75±0.10 1.50±0.10 4.0±0.1 深圳市合拓科技有限公司 Shenzhen Hetuo Technology Co.,Ltd. 2.4GHz 3216 Chip Antenna: HT-3216-C07 Reliability Table _ Test ItemProcedure Requirements Ceramic Type Remark (Reference) Electrical Characterization Fulfill the electrical specification User Spec. Thermal Shock 1. Preconditioning: 50 ± 10°C/ 1 hr , then keep for 24 ± 1 hrs at room temp. 2. Initial measure: Spec: refer Initialspec. 3. Rapid change of temperature test: -30°Cto +85°C; 100 cycles; 15 minutes at Lower category temperature; 15 minutes at Upper category temperature. No Visible Damage. Fulfill the electrical specification. MIL-STD-202 107 Temperature Cycling 1. Initial measure: Spec: refer Initialspec. 2. 100 Cycles (-30°Cto +85°C), Soak Mode=1 (2 Cycle/hours). 3. Measurement at 24 ± 2Hours after testcondition. No Visible Damage. Fulfill the electrical specification. JESD22 JA104 High Temperature Exposure 1. Initial measure: Spec: refer Initialspec. 2. Unpowered; 500hours @ T=+85°C. 3. Measurement at 24 ± 2 hours aftertest. No Visible Damage. Fulfill the electrical specific ation. MIL-STD-202 108 Low Temperature Storage 1. Initial measure: Spec: refer Initialspec. 2. Unpowered: 500hours @ T=-30°C. 3. Measurement at 24 ± 2 hours aftertest. No Visible Damage. Fulfill the electrical specification. MIL-STD-202 108 Solderability (SMD Bottom Side) Dipping method: a. Temperature: 235 ±5°C b. Dipping time: 3 ±0.5s The solder should cover over 95% of the critical area of bottom side. IEC 60384-21/22 4.10 Soldering Heat Resistance (RSH) Preheati ng temperature: 150 ± 10°C. Preheating time: 1~2 min. Solder temperature: 260 ± 5°C. Dipping time: 5 ± 0.5s No Visible Damage.IEC 60384-21/22 4.10 Vibration5g's for 20 min., 12 cycles each of 3 orientations Note: Use 8"X5" PCB .031" thick 7 secure points on, one long side and 2 secure points at corners of opposite sides. Parts mounted within 2" from any secure point. Test from 10-2000 Hz. No Visible Damage.MIL-STD-202 Method 204 Mechanical Shock Three shocks in each direction shall be applied along the three mutually perpendicular axes of the test specimen (18 shocks) Peak value: 1,500g’s Duration: 0.5ms Velocity change: 15.4 ft/s Waveform: Half-sine No Visible Damage.MIL-STD-202 Method 213 Humidity Bias 1. Humidity: 85% R.H., Temperature:85 ± 2 °C. 2. Time: 500 ± 24hours. 3. Measurement at 24 ± 2hrs after testcondition. No Visible Damage. Fulfill the electrical specification. MIL-STD-202 Method 106 深圳市合拓科技有限公司 Shenzhen Hetuo Technology Co.,Ltd. 2.4GHz 3216 Chip Antenna: HT-3216-C07 _ Board Flex (SMD) 1. Mounting method: IR-Reflow. PCB Size (L:100 × W:40 × T:1.6mm) 2. Apply the load in direction of the arrow until bending reaches 2 mm. No Visible Damage.AEC-Q200 005 AdhesionForce of 1.8Kg for 60 seconds.No Visible Damage Magnification of 20X or greater may be employed for inspection of the mechanical integrity of the device body terminals and body/terminal junction. AEC-Q200 006 Physical Dimension Any applicable method using x10 magnification, micrometers, calipers, gauges, contour projectors, or other measuring equipment, capable of determining the actual specimen dimensions. In accordance with specification. JESD22 JB100 Revision History RevisionDateContent 12019/03/01 New Datasheet 22021/02/22Add 2D radiation characteristic 深圳市合拓科技有限公司 Shenzhen Hetuo Technology Co.,Ltd.

Shenzhen xingming Technology Co.,ltd Date: July 3, 2023 Product Model Number: R8, R9, R10 FCC ID: 2A62Y-R8R9R10 To whom it may concern, Re: Product Certification Representative Authorization Letter We authorize QAI Laboratories Ltd. 3980 North Fraser Way, Burnaby B.C. Canada V5J 5K5 to act on our behalf on all matters concerning the above named equipment. This shall include the following: • Testing • Approval applications and procedures We declare that ORGANIZATION. is allowed to forward all information related to the approval project to the applied certification body and to the notification entities and to discuss any issues concerning the approval application. Any and all acts carried out by ORGANIZATION. on our behalf shall have the same effect as acts of our own. By: Yan Zhao Contact Listed on FCC Wesbite Title: Manager Email: [email protected] Telephone: +86-755-26544737 On behalf of: Shenzhen xingming Technology Co.,ltd

FCC ID: 2A62Y-R8R9R10 EUT PHOTO(External Photos)

Page 1 of 1 Label and Information FCC Label Sample FCC Label Specifications Text is Black in color and is justified. Labels are printed in indelible ink on permanent adhesive backing or silk-screened onto the EUT or shall be affixed at a conspicuous location on the EUT. Where the EUT is constructed in two or more sections connected by wires and marketed together, the above statement is required to be affixed only to the main control unit. When the EUT is so small or for such use that it is not practicable to place the statement on it, the above information shall be placed in a prominent location in the instruction manual or pamphlet supplied to the user or, alternatively, shall be placed on the container in which the device is marketed. FCC Label Location

FCC ID: 2A62Y-R8R9R10 EUT PHOTO(Internal Photos) BT ANT

FCC ID: 2A62Y-R8R9R10 RF Exposure Evaluation According to KDB 447498 D01 General RF Exposure Guidance v06 and part 2.1093， Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s), listed below, is (are) satisfied. For 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(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 Here, The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. For BR+EDR Max Conducted Power(dBm) Tune-up Power(dBm) Max Tune-up Power(dBm) Max Power(mW) Frequency(MHz) Min. distance(mm) Calc. thresholds limit 3.25 3(±1) 4 2.512 2402 5 0.778639 3.0 So a SAR test is not required

Project No.: ZKT-230621L4680E Page 1 of 58 FCC TEST REPORT FCC ID: 2A62Y-R8R9R10 Report Number. .............................. : ZKT-230621L4680E Date of Test ..................................................: June 14, 2023 to June 29, 2023 Date of issue ..................................... : June 30, 2023 Total number of pages ....................... 58 Test Result ...................................... : PASS Testing Laboratory......................... : Shenzhen ZKT Technology Co., Ltd. Address ........................................... : 1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China Applicant's name ......................... : Shenzhen xingming Technology Co.,ltd Address ........................................... : Room409-410, 9#Zijing Garden Dalang Huahui Road, Longhua District, Shenzhen, Guangdong Province, China Manufacturer's name ................... : Shenzhen xingming Technology Co.,ltd Address ........................................... : Room409-410, 9#Zijing Garden Dalang Huahui Road, Longhua District, Shenzhen, Guangdong Province, China Test specification: Standard ........................................... : FCC CFR Title 47 Part 15 Subpart C Section 15.247 ANSI C63.10:2013 Test procedure ................................. : / Non-standard test method .............. : N/A Test Report Form No. .................... : TRF-EL-112_V0 Test Report Form(s) Originator .... : ZKT Testing Master TRF ................................... : Dated: 2021-07-06 This device described above has been tested by ZKT, and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of ZKT, this document may be altered or revised by ZKT, personal only, and shall be noted in the revision of the document. Product name ................................. : Bone Conduction Wireless Headphones Trademark ....................................... : N/A Model/Type reference ....................... : R8, R9, R10 Ratings.............................................. : DC 3.7V by battery, USB 5V charging Testing procedure a nd testing location: Testing Laboratory ..................................... :Shenzhen ZKT Technology Co., Ltd. Address ...................................................... :1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China Jim Liu Tested by (name + signature) .................... : Jackson Fan g Reviewer (name + signature) ..................... : Lake Xie Approved (name + signature) .................... : Project No.: ZKT-230621L4680E Page 2 o f 58 Project No.: ZKT-230621L4680E Page 3 of 58 Table of Contents Page 1. VERSION .............................................................. 5 2. TEST SUMMARY ........................................................ 6 2.1 TEST FACILITY ......................................................... 7 2.2 MEASUREMENT UNCERTAINTY.......................................... 7 3. GENERAL INFORMATION ............................................... 8 3.1 GENERAL DESCRIPTION OF EUT ........................................ 8 3.2 Test Setup Configuration .................................................. 9 3.3 Support Equipment ....................................................... 9 3.4 Test Mode ............................................................. 10 3.5 EQUIPMENTS LIST FOR ALL TEST ITEMS ................................ 11 4. EMC EMISSION TEST .................................................. 13 4.1 Conducted emissions .................................................... 13 4.1.1 POWER LINE CONDUCTED EMISSION Limits ........................... 13 4.1.2 TEST PROCEDURE ................................................... 13 4.1.3 DEVIATION FROM TEST STANDARD ................................... 13 4.1.4 TEST SETUP ......................................................... 13 4.1.5 EUT OPERATING CONDITIONS ........................................ 14 4.1.6 Test Result ........................................................... 15 4.2 Radiated emissions ..................................................... 17 4.2.1 Radiated Emission Limits ............................................... 17 4.2.2 TEST PROCEDURE ................................................... 17 4.2.3 DEVIATION FROM TEST STANDARD ................................... 18 4.2.4 TEST SETUP ......................................................... 18 4.2.5 EUT OPERATING CONDITIONS ........................................ 19 4.2.6 TEST RESULTS ...................................................... 19 5. RADIATED BAND EMISSION MEASUREMENT ............................ 26 5.1 Test Requirement: ...................................................... 26 5.2 TEST PROCEDURE .................................................... 26 5.3 DEVIATION FROM TEST STANDARD .................................... 27 5.4 TEST SETUP .......................................................... 27 5.5 EUT OPERATING CONDITIONS ......................................... 27 5.6 TEST RESULT ......................................................... 28 6. CONDUCTED BAND EDGE AND SPURIOUS EMISSION .................... 29 6.1 Limit ................................................................... 29 6.2 Test Setup ............................................................. 29 6.3 Test procedure ......................................................... 29 6.4 DEVIATION FROM STANDARD .......................................... 29 6.5 CSE Test Result ........................................................ 30 7. 20DB&99% BANDWIDTH ............................................... 38 7.1 Test Setup ............................................................. 38 7.2 Limit ................................…

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EUT TEST PHOTO FCC ID: 2A62Y-R8R9R10 Radiated band emission (30MHz-1GHz): Conducted emission: Radiated band emission (Above 1GHz):