2A9OP-A9wireless earphones

A9 wireless earphones A9 A9 A9 A9 This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help.

Huizhou Yuexiqian Technology Co., Ltd. Agent Authorization Company: Huizhou Yuexiqian Technology Co., Ltd. Address: Shuikoujiedaobanshichulonghuyilu11haoJinshenglijinghuayuan7haolou32ceng03haofang zhiyiHuizhoushi Guangdongsheng Product Name: wireless earphones Model Number(s): A9 Product Description: wireless earphones FCC ID: 2A9OP-A9 We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2022-12-08 Name: Liqingliu Title: Manager Company: Huizhou Yuexiqian Technology Co., Ltd.

Huizhou Yuexiqian Technology Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2022-12-08 Subject; Request for Confidentiality FCC ID: 2A9OP-A9 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 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: Liqingliu Title: Manager

Size:10*6mm M/N: A9 FCC ID: 2A9OP-A9 Label location

ANT

2.4GHz 3216 Chip Antenna: RANT3216F245C03 _ Application: WLAN, 802.11b/g, Bluetooth, WLAN, etc... Features SMD, high reliability, ultra Impact, Omni-directional... Part number Information RANT3216F245C03 (A)(B)(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=03 Working Frequency Range2400 ~2500 MHz Bandwidth120 MHz (Min.) Peak Gain 1.20dBi 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 咏成國際科技有限公司電話: RAIN International Technology Co., Ltd.TEL: 2.4GHz 3216 Chip Antenna: RANT3216F245C03 _ 1 Evaluation BoardReference 长条板 PCB 推荐 Dimension 圆板 Antenna Layout Reference Unit :mm Electrical Characteristics Return Loss & Radiation Return Loss Frequency(MHz) S11 (dB) 2400-10.50 2450-30.62 2500-11.47 2.4GHz 3216 Chip Antenna: RANT3216F245C03 _ Radiation X Y Z 2.4GHz 3216 Chip Antenna: RANT3216F245C03 _ 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 Type3216 1.90±0.2 0 3.50±0.2 0 8.0±0.2 0 1.75±0.1 0 3.5±0.054.0±0.102.0±0.050.75±0.1 0 1.50±0.1 0 4.0±0.1 2.4GHz 3216 Chip Antenna: RANT3216F245C03 _ 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 specification. 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) Preheating 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 2.4GHz 3216 Chip Antenna: RANT3216F245C01 _ 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 12019/03/01New Datasheet 22020/02/22Add 2D radiation characteristic

Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20221205027E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 1 of 41 FCC Part 15C Test Report FCC ID: 2A9OP-A9 Applicant: Huizhou Yuexiqian Technology Co., Ltd. Address: Shuikoujiedaobanshichulonghuyilu11haoJinshenglijinghuayuan7haolou32ceng03haofang zhiyiHuizhoushi Guangdongsheng Manufacturer: Huizhou Yuexiqian Technology Co., Ltd. Address: Shuikoujiedaobanshichulonghuyilu11haoJinshenglijinghuayuan7haolou32ceng03haofang zhiyiHuizhoushi Guangdongsheng EUT: wireless earphones Trade Mark: N/A Model Number: A9 Date of Receipt: Nov. 28, 2022 Test Date: Nov. 28, 2022 - Dec. 05, 2022 Date of Report: Dec. 05, 2022 Prepared By: Shenzhen DL Testing Technology Co., Ltd. Address: 101-201, Building C, Shuanghuan, No.8, Baoqing Road, Baolong Industrial Zone, Baolong Street, Longgang District, Shenzhen, Guangdong, China Applicable Standards: FCC PART 15 C 15.249 ANSI C63.10:2013 Test Result: Pass Report Number: DL-20221205027E Prepared (Test Engineer): Pxing Huang Reviewer (Supervisor): Jack Bu Approved (Manager): Jade Yang This test report is based on a single evaluation of one sample of above mentioned products. It is not permitted to be duplicated in extracts without written approval of Shenzhen DL Testing Technology Co., Ltd. Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20221205027E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 2 of 41 Table of Contents Page 1 . SUMMARY OF TEST RESULTS 4 1.1 MEASUREMENT UNCERTAINTY 4 2 . GENERAL INFORMATION 5 2.1 GENERAL DESCRIPTION OF EUT 5 2.2 DESCRIPTION OF TEST MODES 7 2.3 BLOCK DIGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 7 2.4 DESCRIPTION OF SUPPORT UNITS(CONDUCTED MODE) 8 2.5 TABLE OF PARAMETERS OF TEST SOFTWARE SETTING 8 2.6 EQUIPMENTS LIST FOR ALL TEST ITEMS 9 3 . EMC EMISSION TEST 10 3.1 CONDUCTED EMISSION MEASUREMENT 10 3.1.1 POWER LINE CONDUCTED EMISSION LIMITS 10 3.1.2 TEST PROCEDURE 10 3.1.3 DEVIATION FROM TEST STANDARD 10 3.1.4 TEST SETUP 11 3.1.5 EUT OPERATING CONDITIONS 11 3.1.6 TEST RESULTS 11 3.2 RADIATED EMISSION MEASUREMENT 14 3.2.1 RADIATED EMISSION LIMITS 14 3.2.2 TEST PROCEDURE 15 3.2.3 DEVIATION FROM TEST STANDARD 15 3.2.4 TEST SETUP 15 3.2.5 EUT OPERATING CONDITIONS 16 3.2.6 TEST RESULTS (BETWEEN 9KHZ – 30 MHZ) 17 3.2.7 TEST RESULTS (BETWEEN 30MHZ – 1GHZ) 18 3.2.8 TEST RESULTS (1GHZ~25GHZ) 20 3.3 RADIATED BAND EMISSION MEASUREMENT 23 3.3.1 TEST REQUIREMENT: 23 3.3.2 TEST PROCEDURE 23 3.3.3 DEVIATION FROM TEST STANDARD 23 3.3.4 TEST SETUP 24 3.3.5 EUT OPERATING CONDITIONS 24 4 . BANDWIDTH TEST 28 4.1 APPLIED PROCEDURES / LIMIT 28 4.1.1 TEST PROCEDURE 28 4.1.2 DEVIATION FROM STANDARD 28 4.1.3 TEST SETUP 28 4.1.4 EUT OPERATION CONDITIONS 28 Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20221205027E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 3 of 41 Table of Contents Page 4.1.5 TEST RESULTS 29 5 . ANTENNA REQUIREMENT 32 5.1 STANDARD REQUIREMENT 32 5.2 EUT ANTENNA 32 6 . TEST SEUUP PHOTO 33 7 . EUT PHOTO 35 Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20221205027E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 4 of 41 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: FCC Part15 (15.249) , Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS 15.205(a), 15.209(a) 15.249(a), 15.249(c) Fundamental &Radiated Spurious Emission Measurement PASS 15.249(d) Band Edge Emission PASS 15.215(c) 20dB Bandwidth PASS 15.203 Antenna Requirement PASS NOTE: (1)” N/A” denotes test is not applicable in this Test Report 1.1 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2,providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 Conducted Emission Test ±2.56dB 2 RF power,conducted ±0.42dB 3 Spurious emissions,conducted ±2.76dB 4 All emissions,radiated(<1G) ±3.65dB 5 All emissions,radiated(>1G) ±4.89dB 6 Temperature ±0.5°C 7 Humidity ±2% 8 20dB Bandwidth ±0.2MHz Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20221205027E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 5 of 41 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF EUT Product Name: wireless earphones Trademark N/A Model No.: A9 Model Difference N/A Operation Frequency: 2402~2480MHz Channel numbers: 79 Channels Channel separation: 1M Modulation technology: GFSK, PI/4 DQPSK, 8DPSK Antenna Type: Chip antenna Antenna gain: 1.20dBi Power supply: DC 3.7V from battery DC 5V from charger Note: 1.For a more detailed features description, please refer to the manufacturer’s specifications or the User's Manual. 2.The EUT’s all information provided by client. Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20221205027E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 6 of 41 3. Channel List Channel Frequency (MHz) Channel Frequency (MHz) Channel Frequency (MHz) 00 2402 27 2429 54 2456 01 2403 28 2430 55 2457 02 2404 29 2431 56 2458 03 2405 30 2432 57 2459 04 2406 31 2433 58 2460 05 2407 32 2434 59 2461 06 2408 33 2435 60 2462 07 2409 34 2436 61 2463 08 2410 35 2437 62 2464 09 2411 36 2438 63 2465 10 2412 37 2439 64 2466 11 2413 38 2440 65 2467 12 2414 39 2441 66 2468 13 2415 40 2442 67 2469 14 2416 41 2443 68 2470 15 2417 42 2444 69 2471 16 2418 43 2445 70 2472 17 2419 44 2446 71 2473 18 2420 45 2447 72 2474 19 2421 46 2448 73 2475 20 2422 47 2449 74 2476 21 2423 48 2450 75 2477 22 2424 49 2451 76 2478 23 2425 50 2452 77 2479 24 2426 51 2453 78 2480 25 2427 52 2454 26 2428 53 2455 Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20221205027E Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 7 of 41 2.2 DESCRIPTION OF TEST MODES Note: (1) The measurements are perf…

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Radiated Measurement Photos Conducted Measurement Photos