2AWNU-BAA001USB-C to Bluetooth Audio Adapter

FCC Warning 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. NOTE 1: 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. NOTE 2: Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

Reference No.: WTX21X07071150W Page 2 of 10 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EXHIBIT 2 - EUT EXTERNAL PHOTOGRAPHS EUT View 1 EUT View 2 Reference No.: WTX21X07071150W Page 3 of 10 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 3 EUT View 4 Reference No.: WTX21X07071150W Page 4 of 10 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 5 EUT View 6 Reference No.: WTX21X07071150W Page 5 of 10 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 7

Reference No.: WTX21X07071150W Page 1 of 10 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn ANNEX EXHIBIT 1 - PRODUCT LABELING Proposed FCC ID Label Format FCC ID: 2AWNU-BAA001 Specifications: The label shall be securely affixed to a permanently attached part of the device, in a location where it is visible or easily accessible to the user, and shall not be readily detachable. The label shall be sufficiently durable to remain fully legible and intact on the device in all normal conditions of use throughout the device’s expected lifetime. Proposed Label Location on EUT FCC ID Label Location

Reference No.: WTX21X07071150W Page 6 of 10 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EXHIBIT 3 - EUT INTERNAL PHOTOGRAPHS EUT Housing and Board View 1 Solder Board-Component View 1 Reference No.: WTX21X07071150W Page 7 of 10 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 2 Antenna View

RF Exposure Requirements Product Description: USB-C to Bluetooth Audio Adapter Model No.: BAA001 FCC ID: 2AWNU-BAA001 According to the KDB 447498 D01 v06 section 4.3.1, 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 Calculation Result: Tx frequency range: 2402-2480MHz Min. test separation distance: 5mm Maximum Conducted Output Power: 6.59dBm Tune-Up output power: 7dBm RF channel transmit frequency: 2441MHz Result: 1.6 Limit: 3.0 The exclusion thresholds is 1.6 < 3, so the transmitter complies with the RF exposure requirements and the SAR is not required.

Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 1 of 63 TEST REPORT Reference No. .................... : WTX21X07071150W FCC ID ................................ : 2AWNU-BAA001 Applicant ........................... : GD DIGITAL LTD Address.............................. : 4th Building, Tianan Digital City, Huangge Road , Longgang District,Shenzhen Product Name ................... : USB-C to Bluetooth Audio Adapter Test Model. ........................ : BAA001 Standards .......................... : FCC Part 15.247 Date of Receipt sample .... : Jul.16, 2021 Date of Test........................ : Jul.16, 2021 to Aug. 09, 2021 Date of Issue ..................... : Aug. 09, 2021 Test Result ......................... : Pass Remarks: The results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Prepared By: Waltek Testing Group (Shenzhen) Co., Ltd. Address: 1/F., Room 101, Building 1, Hongwei Industrial Park, Liuxian 2nd Road, Block 70 Bao'an District, Shenzhen, Guangdong, China Tel.: +86-755-33663308 Fax.: +86-755-33663309 Tested by: Reviewed By: Approved & Authorized By: Jack Huang/ Project Engineer Lion Cai / RF Manager Silin Chen / Manager Reference No.: WTX21X07071150W Page 2 of 63 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn TABLE OF CONTENTS 1. GENERAL INFORMATION ...................................................................................................................................4 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ...............................................................................4 1.2 TEST STANDARDS ...................................................................................................................................................5 1.3 TEST METHODOLOGY .............................................................................................................................................5 1.4 TEST FACILITY .......................................................................................................................................................5 1.5 EUT SETUP AND TEST MODE .................................................................................................................................6 1.6 MEASUREMENT UNCERTAINTY ..............................................................................................................................7 1.7 TEST EQUIPMENT LIST AND DETAILS .....................................................................................................................8 2. SUMMARY OF TEST RESULTS ......................................................................................................................... 10 3. ANTENNA REQUIREMENT ................................................................................................................................ 11 3.1 STANDARD APPLICABLE ....................................................................................................................................... 11 3.2 EVALUATION INFORMATION................................................................................................................................. 11 4. FREQUENCY HOPPING SYSTEM REQUIREMENTS.................................................................................... 12 4.1 STANDARD APPLICABLE ....................................................................................................................................... 12 4.2 FREQUENCY HOPPING SYSTEM............................................................................................................................. 12 4.3 EUT PSEUDORANDOM FREQUENCY HOPPING SEQUENCE .................................................................................... 13 5. QUANTITY OF HOPPING CHANNELS AND CHANNEL SEPARATION ................................................... 14 5.1 STANDARD APPLICABLE ....................................................................................................................................... 14 5.2 TEST SETUP BLOCK DIAGRAM ............................................................................................................................. 14 5.3 TEST PROCEDURE ................................................................................................................................................. 14 5.4 SUMMARY OF TEST RESULTS/PLOTS .................................................................................................................... 15 6. DWELL TIME OF HOPPING CHANNEL .......................................................................................................... 16 6.1 STANDARD APPLICABLE ....................................................................................................................................... 16 6.2 TEST SETUP BLOCK DIAGRAM ............................................................................................................................. 16 6.3 TEST PROCEDURE ................................................................................................................................................. 16 6.4 SUMMARY OF TEST RESULTS/PLOTS .................................................................................................................... 17 7. 20DB BANDWIDTH ............................................................................................................................................... 18 7.1 STANDARD APPLICABLE ....................................................................................................................................... 18 7.2 TEST SETUP BLOCK DIAGRAM ..........................................................................................…

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Reference No.: WTX21X07071150W Page 8 of 10 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EXHIBIT 4 - TEST SETUP PHOTOGRAPHS Radiation Emission Test Setup (Below 30MHz) Radiation Emission Test Setup (30MHz to 1GHz) Reference No.: WTX21X07071150W Page 9 of 10 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Radiation Emission Test Setup (1GHz to 18GHz) Radiation Emission Test Setup (Above 18GHz) Reference No.: WTX21X07071150W Page 10 of 10 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn ***** END OF REPORT *****