2AWHJ-AIR-2Wireless Earbuds with Charging Case

FCC Statement Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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 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. FCC ID: 2AWHJ-AIR-2

ADX LABS, INC O ffice of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2020-06-24 Subject; Request for Long Term Confidentiality FCC ID: 2AWHJ-AIR-2 T o 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. T hese 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 I t 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. S incerely, S ignature: N ame: Jonathan Neil T itle: N/A

ADX LABS, INC Agent Authorization Company: ADX LABS, INC Address: 120 South 6th Street, Suite 1000/10th Floor, Minneapolis, MN55402, USA Product Name: Wireless Earbuds with Charging Case Model Number(s): AIR 2 Product Description: Wireless Earbuds with Charging Case 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: 2020-06-24 Name: Jonathan Neil Title: N/A Company: ADX LABS, INC

Page 1 of 10 Appendix B: Photographs of EUT Product: Wireless Earbuds with Charging Case Model: AIR 2 External Photos Page 2 of 10 Page 3 of 10 Page 4 of 10 Page 5 of 10 Page 6 of 10 Page 7 of 10 Page 8 of 10 Page 9 of 10 Page 10 of 10

Label Artwork and Location Model: AIR 2 Label: FCC ID location of user manual

Page 1 of 13 Appendix B: Photographs of EUT Product: Wireless Earbuds with Charging Case Model: AIR 2 Internal Photos Page 2 of 13 Antenna Page 3 of 13 Page 4 of 13 Page 5 of 13 Page 6 of 13 Page 7 of 13 Page 8 of 13 Page 9 of 13 Page 10 of 13 Page 11 of 13 Page 12 of 13 Page 13 of 13

RF exposure evaluation FCC ID: 2AWHJ-AIR-2 §2.1093 Radiofrequency radiation exposure evaluation: Portable Devices. According to§15.247(i) and§1.1307b(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the commission’s guidance. The 1-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, where  f(GHz) is the RF channel transmit frequency in GHz  Power and distance are rounded to the nearest mW and mm before calculation  When the minimum test separation distance is < 5 mm, a distance of 5 mm according is applied to determine SAR test exclusion.  The result is rounded to one decimal place for comparison  For EDR+BDR: Channel Frequency (GHz) Max. Power (dBm) Tune up Power (dBm) Max. Tune up Power (dBm) Max. Tune up Power (mW) Test distance (mm) Result exclusion thresholds for 1-g SAR CH 78 2.480 2.93 2±1 3 2.00 5 0.63 3.0 For BLE: Channel Frequency (GHz) Max. Power (dBm) Tune up Power (dBm) Max. Tune up Power (dBm) Max. Tune up Power (mW) Test distance (mm) Result exclusion thresholds for 1-g SAR CH 39 2.480 0 -1±1 0 1.00 5 0.31 3.0 Result: Base on the calculation value, No SAR measurement is required.

Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com TEST REPORT FCC ID: 2AWHJ-AIR-2 Product: Wireless Earbuds with Charging Case Model No.: AIR 2 Additional Model No.: N/A Trade Mark: MyMy Music Report No.: TCT200509E018 Issued Date: Jun. 22, 2020 Issued for: ADX LABS, INC 120 South 6th Street, Suite 1000/10th Floor, Minneapolis, Minnesota 55402, United States Issued By: Shenzhen Tongce Testing Lab. 1B/F., Building 1, Yibaolai Industrial Park, Qiaotou, Fuyong, Baoan District, Shenzhen, Guangdong, China TEL: +86-755-27673339 FAX: +86-755-27673332 Note: This report shall not be reproduced except in full, without the written approval of Shenzhen Tongce Testing Lab. This document may be altered or revised by Shenzhen Tongce Testing Lab. personnel only, and shall be noted in the revision section of the document. The test results in the report only apply to the tested sample. Report No.: TCT200509E018 Page 2 of 79 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com TABLE OF CONTENTS 1. Test Certification....................................................................................... 3 2. Test Result Summary ............................................................................... 4 3. EUT Description ........................................................................................ 5 4. General Information .................................................................................. 6 4.1. Test environment and mode ................................................................................. 6 4.2. Description of Support Units ................................................................................ 6 5. Facilities and Accreditations ................................................................... 7 5.1. Facilities ................................................................................................................. 7 5.2. Location ................................................................................................................. 7 5.3. Measurement Uncertainty ..................................................................................... 7 6. Test Results and Measurement Data ...................................................... 8 6.1. Antenna requirement ............................................................................................ 8 6.2. Conducted Emission ............................................................................................. 9 6.3. Conducted Output Power ................................................................................... 13 6.4. 20dB Occupy Bandwidth .................................................................................... 18 6.5. Carrier Frequencies Separation ......................................................................... 23 6.6. Hopping Channel Number .................................................................................. 28 6.7. Dwell Time ............................................................................................................ 31 6.8. Pseudorandom Frequency Hopping Sequence ................................................ 36 6.9. Conducted Band Edge Measurement ................................................................ 37 6.10. Conducted Spurious Emission Measurement ................................................. 41 6.11. Radiated Spurious Emission Measurement .................................................... 45 Appendix A: Photographs of Test Setup Appendix B: Photographs of EUT Report No.: TCT200509E018 Page 3 of 79 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 1. Test Certification Product: Wireless Earbuds with Charging Case Model No.: AIR 2 Additional Model No.: N/A Trade Mark: MyMy Music Applicant: ADX LABS, INC Address: 120 South 6th Street, Suite 1000/10th Floor, Minneapolis, Minnesota 55402, United States Manufacturer: ADX LABS, INC Address: 120 South 6th Street, Suite 1000/10th Floor, Minneapolis, Minnesota 55402, United States Date of Test: May 11, 2020 – Jun. 19, 2020 Applicable Standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 FCC KDB 558074 D01 15.247 Meas Guidance v05r02 ANSI C63.10:2013 The above equipment has been tested by Shenzhen Tongce Testing Lab. and found compliance with the requirements set forth in the technical standards mentioned above. The results of testing in this report apply only to the product/system, which was tested. Other similar equipment will not necessarily produce the same results due to production tolerance and measurement uncertainties. Tested By: Date: Jun. 19, 2020 Brave Zeng Reviewed By: Date: Jun. 22, 2020 Beryl Zhao Approved By: Date: Jun. 22, 2020 Tomsin Report No.: TCT200509E018 Page 4 of 79 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 2. Test Result Summary Requirement CFR 47 Section Result Antenna Requirement §15.203/§15.247 (c) PASS AC Power Line Conducted Emission §15.207 PASS Conducted Peak Output Power §15.247 (b)(1) PASS 20dB Occupied Bandwidth §15.247 (a)(1) PASS Carrier Frequencies Separation §15.247 (a)(1) PASS Hopping Channel Number §15.247 (a)(1) PASS Dwell Time §15.247 (a)(1) PASS Radiated Emission §15.205/§15.209 PASS Band Edge §15.247(d) PASS Note: 1. PASS: Test item meets the requirement. 2. Fail: Test item does not meet the requirement. 3. N/A: Test case does not apply to the test object. 4. The test result judgment is decided by the limit of test standard. Report No.: TCT200509E018 Page 5 of 79 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 3. EUT Description Product: Wireless Earbuds with Charging Case Model No.: AIR 2 Additional Model No.: N/A Trade Mark: MyMy Music Bluetooth Version: V5.0 (This report is for BDR+EDR) Operation Frequency: 2402MHz~2480MHz Transfer Rate: 1/2/3 Mbits/s Number of Channel: 79 Modulation Type: GFSK, π/4-DQ…

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Report No.: TCT200509E018 Page 51 of 79 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Vertical: Note : 1.The low frequency, which started from 9KHz~30MHz, was pre-scanned and the result which was 20dB lower than the limit line per 15.31(o) was not reported 2. Measurements were conducted in all three channels (high, middle, low) and three modulation (GFSK, Pi/4 DQPSK, 8DPSK) and the worst case Mode (Highest channel and GFSK) was submitted only. 3. Freq. = Emission frequency in MHz Measurement (dBμV/m) = Reading level (dBμV) + Corr. Factor (dB) Correction Factor= Antenna Factor + Cable loss – Pre-amplifier Limit (dBμV/m) = Limit stated in standard Margin (dB) = Measurement (dBμV/m) – Limits (dBμV/m) Any value more than 10dB below limit have not been specifically reported * is meaning the worst frequency has been tested in the test frequency range Report No.: TCT200509E018 Page 52 of 79 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Test Result of Radiated Spurious at Band edges Lowest channel 2402: Horizontal: Vertical: Frequency (MHz) Ant. Pol. H/V Peak (dBμV/m) Duty cycle factor (dB/m) AV (dBμV/m) Peak limit (dBμV/m) AV limit (dBμV/m) PK Margin (dB) AVG Margin (dB) 2390 H 38.77 -4.62 34.15 74 54 -35.23 -19.85 2390 V 38.39 -4.62 33.77 74 54 -35.61 -20.23 2400 H 46.80 -4.62 42.18 74 54 -27.20 -11.82 2400 V 46.69 -4.62 42.07 74 54 -27.31 -11.93 Report No.: TCT200509E018 Page 53 of 79 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Highest channel 2480: Horizontal: Vertical: Frequency (MHz) Ant. Pol. H/V Peak (dBμV/m) Duty cycle factor (dB/m) AV (dBμV/m) Peak limit (dBμV/m) AV limit (dBμV/m) PK Margin (dB) AVG Margin (dB) 2483.5 H 46.35 -4.62 41.73 74 54 -27.65 -12.27 2483.5 V 46.69 -4.62 42.07 74 54 -27.31 -11.93 Note: Measurements were conducted in all three modulation (GFSK, Pi/4DQPSK, 8DPSK), and the worst case Mode (GFSK) was submitted only. Report No.: TCT200509E018 Page 54 of 79 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Above 1GHz Modulation Type: GFSK Low channel: 2402 MHz Frequency (MHz) Ant. Pol. H/V Peak reading (dBμV) AV reading (dBuV) Correction Factor (dB/m) Emission Level Peak limit (dBμV/m) AV limit (dBμV/m) Margin (dB) Peak (dBμV/m) AV (dBμV/m) 4804 H 45.93 --- 0.66 46.59 --- 74 54 -7.41 7206 H 36.27 --- 9.50 45.77 --- 74 54 -8.23 --- H --- --- --- --- --- --- --- --- 4804 V 44.89 --- 0.66 45.55 --- 74 54 -8.45 7206 V 35.04 --- 9.50 44.54 --- 74 54 -9.46 --- V --- --- --- --- --- --- --- --- Middle channel: 2441 MHz Frequency (MHz) Ant. Pol. H/V Peak reading (dBμV) AV reading (dBμV) Correction Factor (dB/m) Emission Level Peak limit (dBμV/m) AV limit (dBμV/m) Margin (dB) Peak (dBμV/m) AV (dBμV/m) 4882 H 45.58 --- 0.99 46.57 --- 74 54 -7.43 7323 H 34.67 --- 9.87 44.54 --- 74 54 -9.46 --- H --- --- --- --- --- --- --- --- 4882 V 44.74 --- 0.99 45.73 --- 74 54 -8.27 7323 V 35.06 --- 9.87 44.93 --- 74 54 -9.07 --- V --- --- --- --- ---- --- --- --- High channel: 2480 MHz Frequency (MHz) Ant. Pol. H/V Peak reading (dBμV) AV reading (dBμV) Correction Factor (dB/m) Emission Level Peak limit (dBμV/m) AV limit (dBμV/m) Margin (dB) Peak (dBμV/m) AV (dBμV/m) 4960 H 46.98 --- 1.33 48.31 --- 74 54 -5.69 7440 H 37.15 --- 10.22 47.37 --- 74 54 -6.63 --- H --- --- --- --- --- --- --- --- 4960 V 47.59 --- 1.33 48.92 --- 74 54 -5.08 7440 V 37.12 --- 10.22 47.34 --- 74 54 -6.66 --- V --- --- --- --- --- --- --- --- Note: 1. Emission Level=Peak Reading + Correction Factor; Correction Factor= Antenna Factor + Cable loss – Pre-amplifier 2. Margin (dB) = Emission Level (Peak) (dBμV/m)-Average limit (dBμV/m) 3. The emission levels of other frequencies are very lower than the limit and not show in test report. 4. Measurements were conducted from 1 GHz to the 10th harmonic of highest fundamental frequency. 5. Data of measurement shown “---“in the above table mean that the reading of emissions is attenuated more than 20 dB below the limits or the field strength is too small to be measured. 6. Measurements were conducted in all three modulation (GFSK, Pi/4 DQPSK, 8DPSK), and the worst case Mode (GFSK) was submitted only. 7. All the restriction bands are compliance with the limit of 15.209. Report No.: TCT200509E018 Page 55 of 79 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Appendix A: Photographs of Test Setup Product: Wireless Earbuds with Charging Case Model: AIR 2 Radiated Emission Report No.: TCT200509E018 Page 56 of 79 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Conducted Emission Report No.: TCT200509E018 Page 57 of 79 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Appendix B: Photographs of EUT Product: Wireless Earbuds with Charging Case Model: AIR 2 External Photos Report No.: TCT200509E018 Page 58 of 79 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Report No.: TCT200509E018 Page 59 of 79 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Report No.: TCT200509E018 Page 60 of 79 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Report No.: TCT200509E018 Page 61 of 79 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Report No.: TCT200509E018 Page 62 of 79 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Report No.: TCT200509E018 Page 63 of 79 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Report No.: TCT200509E018 Page 64 of 79 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Report No.: TCT200509E018 Page 65 of 79 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Report No.: TCT200509E018 Page 66 of 79 Hotline:…

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Page 1 of 2 Appendix A: Photographs of Test Setup Product: Wireless Earbuds with Charging Case Model: AIR 2 Radiated Emission Page 2 of 2 Conducted Emission