2A9RJ-A66Wireless Earbuds

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 Lixufa Technology Co., Ltd. Agent Authorization Company: Huizhou Lixufa Technology Co., Ltd. Address: Room 02, Floor 10, Longjingmingyuan, No. 19, West Water Road Longfeng Garden, Huicheng DistrictHuizhou City Guangdong Province Product Name: Wireless Earbuds Model Number(s): A66 Product Description: Wireless Earbuds FCC ID: 2A9RJ-A66 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: 2023-01-28 Name: Pan wenjing Title: Manager Company: Huizhou Lixufa Technology Co., Ltd.

Huizhou Lixufa Technology Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2023-01-28 Subject; Request for Confidentiality FCC ID: 2A9RJ-A66 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: Date: 2023-01-28 Name: Pan wenjing Title: Manager Company: Huizhou Lixufa Technology Co., Ltd.

Huizhou Lixufa Technology Co., Ltd. Responsibility Declaration Letter v1.0 Responsibility Declaration Letter Company: Huizhou Lixufa Technology Co., Ltd. Address: Room 02, Floor 10, Longjingmingyuan, No. 19, West Water Road Longfeng Garden, Huicheng DistrictHuizhou City Guangdong Province Product Name: Wireless Earbuds Model Number(s): A66 Product Description: Wireless Earbuds FCC ID: 2A9RJ-A66 We, [Huizhou Lixufa Technology Co., Ltd.], hereby acknowledge that all the product information (including all original, drafted, or modified documents) provided to the TCB either by us or our agent or representative(s) for the purposes of FCC certification will meet FCC regulations and requirements; and that any modifications or changes made as a result of TCB review of the documents will be formally implemented into the manufacturing process and product documentation shipped with equipment. We also confirm that all information provided is legitimate and does not contain any false content such as forgery, fabrication, alteration, tampering and concealment. We assume all economic and legal responsibilities in matters that may arise as a result of disclosure on sample products and associated product documentation provided for product certification that may subsequently be found to be a mis- representation of the final product and accompanying documentation when produced, marketed, or sold in the United States, Canada, or anywhere in the world. Your sincerely, Signature: Date: 2023-01-28 Name: Pan wenjing Title: Manager Company: Huizhou Lixufa Technology Co., Ltd. Signature of FCC grant holder (Include Title, Company name, date, and official company stamp):

Size:10*6mm M/N: A66 FCC ID: 2A9RJ-A66 Label location

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深圳福汇科技有限公司 Shenzhen Fuhui Technology Co.Ltc Prepared by : harry Designed by : andy Checked by : andy Approved by：oliver TITLE：3.2x1.6 x 0.5mm) WiFi/Bluetooth Ceramic Chip Antenna (YF400B) Engineering Specification DOCUMENT REV. NO. A PAGE 1 OF 8 FH 3216 D1 R 2445 01 12 3 45 3.2 x 1.6 x 0.5(mm) WiFi/Bluetooth Ceramic Chip Antenna (FH100G) Engineering Specification 1.Product Number 1 2 3 4 5 FH3216D1R244501 深圳福汇科技有限公司 Shenzhen Fuhui Technology Co.Ltc Prepared by : harry Designed by : andy Checked by : andy Approved by：oliver TITLE：3.2x1.6 x 0.5mm) WiFi/Bluetooth Ceramic Chip Antenna (YF400B) Engineering Specification DOCUMENT FH3216D1R244501 REV. NO. A PAGE 2 OF 8 2.Features *Stable and reliable in performances *Low temperature coefficient of frequency *Low profile, compact size *RoHS compliance *SMT processes compatible 3.Applications *Bluetooth earphone systems *Hand-held devices when WiFi /Bluetooth functions are needed, e.g., Smart phone. *IEEE802.11 b/g/n *ZigBee *Wireless PCMCIA cards or USB dongle 4.Description Fu hui chip antenna series are specially designed for WiFi/Bluetooth applications. Based on yingfeng proprietary design and processes, this chip antenna has excellent stability and sensitivity to consistently provide high signal reception efficiency. 5.Electrical Specifications (40 x 40 mm 2 ground plane) 5-1. Electrical Table Characteristics Specifications Unit Outline Dimensions 3.2x1.6x0.5 mm Working Frequency 2400~2500 MHz VSWR 2 Max. Impedance 50  Polarization Linear Polarization Gain Peak 1.20 (typical) dBi Efficiency 72 (typical) % 5-2. Return Loss & VSWR Chip Antenna _ Radiation X Y Z 深圳福汇科技有限公司 Shenzhen Fuhui Technology Co.Ltc Prepared by : harry Designed by : andy Checked by : andy Approved by：oliver TITLE：3.2x1.6 x 0.5mm) WiFi/Bluetooth Ceramic Chip Antenna (YF400B) Engineering Specification DOCUMENT FH3216D1R244501 REV. NO. A PAGE 4 OF 8 深圳福汇科技有限公司 Shenzhen Fuhui Technology Co.Ltc Prepared by : harry Designed by : andy Checked by : andy Approved by：oliver TITLE：3.2x1.6 x 0.5mm) WiFi/Bluetooth Ceramic Chip Antenna (YF400B) Engineering Specification DOCUMENT FH3216D1R244501 REV. NO. A PAGE 5 OF 8 7.Radiation Pattern (40x 40 mm 2 ground plane) 7-1. 3D Gain Pattern @ 2450 MHz Z X Y Y X Z 深圳福汇科技有限公司 Shenzhen Fuhui Technology Co.Ltc Prepared by : harry Designed by : andy Checked by : andy Approved by：oliver TITLE：3.2x1.6 x 0.5mm) WiFi/Bluetooth Ceramic Chip Antenna (YF400B) Engineering Specification DOCUMENT FH3216D1R244501 REV. NO. A PAGE 6 OF 8 深圳福汇科技有限公司 Shenzhen Fuhui Technology Co.Ltc Prepared by : harry Designed by : andy Checked by : andy Approved by：oliver TITLE：3.2x1.6 x 0.5mm) WiFi/Bluetooth Ceramic Chip Antenna (YF400B) Engineering Specification DOCUMENT FH3216D1R244501 REV. NO. A PAGE 7 OF 8 深圳福汇科技有限公司 Shenzhen Fuhui Technology Co.Ltc Prepared by : harry Designed by : andy Checked by : andy Approved by：oliver TITLE：3.2x1.6 x 0.5mm) WiFi/Bluetooth Ceramic Chip Antenna (YF400B) Engineering Specification DOCUMENT FH3216D1R244501 REV. NO. A PAGE 8 OF 8

Shenzhen DL Testing Technology Co., Ltd. Report No.: DL-20221229013E 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: 2A9RJ-A66 Applicant: Huizhou Lixufa Technology Co., Ltd. Address: Room 02, Floor 10, Longjingmingyuan, No. 19, West Water Road Longfeng Garden, Huicheng DistrictHuizhou City Guangdong Province Manufacturer: Huizhou Lixufa Technology Co., Ltd. Shenzhen Bonfin Address: South, 5/F, Xinlong Keji Park, No. 2 Dawangshan Industry 1st Rd., Shajing St., Bao'an, Shenzhen EUT: Wireless Earbuds Trade Mark: N/A Model Number: A66 Date of Receipt: Dec. 13, 2022 Test Date: Dec. 13, 2022 - Dec. 29, 2022 Date of Report: Dec. 29, 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-20221229013E 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-20221229013E 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-20221229013E 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-20221229013E 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-20221229013E 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 Earbuds Trademark N/A Model No.: A66 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-20221229013E 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-20221229013E 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 …

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Radiated Measurement Photos Conducted Measurement Photos