2AKFED425Bluetooth Earbud

TRUE MUTE ‐ User Manual Thank you for choosing the Defunc TRUE MUTE model. Read this manual to optimize your experience. Technical specifications Bluetooth ® version: 5.0 Transmission frequency: 2.4 GHz Earbud battery: 50 mAh Charging case: 500 mAh Earbud recharges in charging case: 4-5 times Active playtime: ≈ 7-8h Standby time: ≈80H Charging time: ≈ 1.5hrs Speaker dimension: Dia 13mm 32Ω±15% Speaker sensitivity: 101±3dB At 1KHz 126mV Charging means: USB to Type C Power supply bin voltage: 5V Transmission frequency: 20Hz-20KHz Codex: AAC, SBC Rated Power for Earbuds: 22.2mW Rated power for Charging case: 0.38W Frequency band in which the product operates==2402~2480MHz Maximum radio-frequency power transmitted within above frequency band 4dBm（Refer to the CE- Red report later, to be update once the report is available） Net weight: ≈ approx 49g What’s included Defunc True Mute earbuds USB-C charging cable Charging case User manual x1 Silicon tips, A3 series: 2pcs L size, 2pcs M size, 2 pcs S size; Q31 series: 2pcs L size, 2pcs M size, 2 pcs S size. With Hall switch When open the lid charging case, the earbuds out will automatically power on and pair to each other. Overview and controls Power on: Open the lid of the charging case and take the earbuds out for auto-power on. or touch the L & R earbuds for 3 seconds to power on the earbuds. Power off: Put the earbuds back in the charging case or touch either the right or left earbuds for 5 seconds. Auto-power off: The earbud will turned off after 5 minutes in paired mode without connected device. Answer/end call: Double-click either the left or right earbud for pick up the phone calls or end the phone calls. Reject call: Press either the left or right earbuds for 2 seconds to reject the call. Play/pause: While listening to music, double-click the touch area of any earbud once for play&pause the music. Next track: While listening to music, triple-click the right earbud for to enter into next track. Previous track: While listening to music, triple-click the left earbud to enter into last track. Voice assistant: Press the left earbud for 3 seconds to active the Voice Assisstant, and press the left earbud for 3 seconds again to close it（Most of android phones automatically close the Voice Assistant and do not accept the earbud shutdown instructions）. Pairing Charge the earbuds fully before pairing it to you device for first time using. 1.Open the lid of the charging case, the Earbuds will automatically power on and paired to each other. 2. When blue/red lights in the right or left earbud flashing alternatively, means earbuds are ready to be paired to your device. 3. Active Bluetooth function on your device and select Defunc TRUE MUTE in the Bluetooth list. ANC/Monitor Earbuds boot will not automatically active the ANC or Monitor function and need to operate through the follow steps. 1. Press the right earbud for 3 seconds to the ANC function. 2. Press the right earbud for 3 seconds again to close it and enter into Monitor function. 3. Press the right earbud for 3 seconds again to close the Monitor function. Charging Charge earbuds: Put the earbuds back into charging case and close the lid. Charging: Red light of earbuds is on. Charge case Connect it to the power supply with USB cable. Charging: Blue light flashing Charging status: Each light equals 25% charged, once accumulated up to 25% then the flashing light begin to on, and the next light start to flashing. Fully charged: All 4 lights are on, and then all go out. Charing Case and earbuds can be charged simultaneously. For support, visit www.defunc.com/troubleshooting FCC Warning 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 ar e 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 par ticular 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 r eceiving 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. Oper ation 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. The device has been evaluated to meet general RF exposure requirement.

The Art of Utility AB Agent Authorization Company: The Art of Utility AB Address: Upplandsgatan 7, 111 23 Stockholm, Sweden Product Name: Bluetooth Earbud Model Number(s): Defunc TRUE MUTE Product Description: Bluetooth Earbud 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: Nov. 11, 2020 Name: Johan Wahlback Title: CЕО Company: The Art of Utility AB

The Art of Utility AB Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Nov. 11, 2020 Subject; Request for Confidentiality FCC ID: 2AKFED425 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: Johan Wahlback Title: CЕО

Annex A External Photos Report No.:HK2010122848-E Page 1 of 4 Report No.:HK2010122848-E Page 2 of 4 Report No.:HK2010122848-E Page 3 of 4 Report No.:HK2010122848-E Page 4 of 4

Annex A External Photos Report No.:HK2010122848-E Page 1 of 4 Report No.:HK2010122848-E Page 2 of 4 Report No.:HK2010122848-E Page 3 of 4 Report No.:HK2010122848-E Page 4 of 4

FCC ID LABEL: Ca. 8mm x 10mm Label Location FCC ID: 2AKFED425

Annex B Internal Photo Report No.:HK2010122848-E Page 1 of 4 Report No.HK2010122848-E Page 2 of 4 Report No.HK2010122848-E Page 3of 4 Antenna Report No.HK2010122848-E Page 4 of 4

FCC RF Exposure EUT Description: Bluetooth Earbud Model No.: Defunc TRUE MUTE FCC ID : 2AKFED425 1. Limits According to KDB 447498 D01 General RF Exposure Guidance v06 The 1‐g and 10‐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 and ≤ 7.5 for 10‐g extremity SAR, Where: Result=P/D*√F F= the RF channel transmit frequency in GHz P=Maximum turn‐up power in mw D=Min. test separation distance in mm 2. Test Result of RF Exposure Evaluation 2.4G Output power （dBm ） Tune Up Power （dBm） Max Tune Up power dBm/mW Min test separatio n distance mm Result Limit SAR Test Exclusion BT ‐1.024 ‐2±1 ‐1/ 0.79 5 0.24686 3.0 Pass Note: PK Output power= conducted power. Conducted power see the test report HK2010122848‐E, antenna gain=‐0dBi Per KDB 447498 D01, when the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine RF Exposure test exclusion. The test exclusion threshold is 0.24686 which is<= 3, RF Exposure testing is not required. Note: Exclusion Thresholds Results=[(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f(GHz)] f(GHz) is the RF channel transmit frequency in GHz Distance=5mm

Page 1 of 48 Report No.: HK2010122848-E TEST REPORT FCC PART 15 SUBPART C 15.247 Test report On Behalf of The Art of Utility AB For Bluetooth Earbud Model No.: Defunc TRUE MUTE FCC ID: 2AKFED425 Prepared for : The Art of Utility AB Upplandsgatan 7, 111 23 Stockholm, Sweden Prepared By : Shenzhen HUAK Testing Technology Co., Ltd. 1F, B2 Building, Junfeng Zhongcheng Zhizao Innovation Park, Fuhai Street, Bao'an District, Shenzhen City, China Date of Test: Oct. 09, 2020 ~ Oct. 16, 2020 Date of Report: Oct. 16, 2020 Report Number: HK2010122848-E Page 2 of 48 Report No.: HK2010122848-E TEST RESULT CERTIFICATION Applicant’s name ................. : The Art of Utility AB Address ................................. : Upplandsgatan 7, 111 23 Stockholm, Sweden Manufacture's Name ............ : Topalong Lean Supply (H.K) Ltd Address ................................. : ROOM F 8/F, WANG CHEONG BUILDING, NO.251 RECLAMATION STREET, KOWLOON, HK Product description Trade Mark: Defunc Product name ........................... : Bluetooth Earbud Model and/or type reference : Defunc TRUE MUTE Standards ............................. : 47 CFR FCC Part 15 Subpart C 15.247 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HUAK Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HUAK Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Date of Test ............................................ : Date (s) of performance of tests ............. : Oct. 09, 2020 ~ Oct. 16, 2020 Date of Issue ........................................... : Oct. 16, 2020 Test Result ............................................... : Pass Prepared by: Project Engineer Reviewed by: Project Supervisor Approved by: Jasou Zhou Page 3 of 48 Report No.: HK2010122848-E Table of Contents Page 1. SUMMARY............................................................................................................................................................ 5 1.1. TEST STANDARDS ..................................................................................................................................................... 5 1.2. TEST DESCRIPTION ........................................................................................................................................................ 5 1.3. TEST FACILITY .............................................................................................................................................................. 6 1.4. STATEMENT OF THE MEASUREMENT UNCERTAINTY ............................................................................................................... 6 2. GENERAL INFORMATION ....................................................................................................................................... 7 2.1. ENVIRONMENTAL CONDITIONS ........................................................................................................................................ 7 2.2. GENERAL DESCRIPTION OF EUT ...................................................................................................................................... 7 2.3. DESCRIPTION OF TEST MODES AND TEST FREQUENCY .......................................................................................................... 8 2.4. EQUIPMENTS USED DURING THE TEST .............................................................................................................................. 9 2.5. RELATED SUBMITTAL(S) / GRANT (S) .............................................................................................................................. 10 2.6. MODIFICATIONS ......................................................................................................................................................... 10 2.7. DESCRIPTION OF TEST SETUP ................................................................................................................................ 10 3. TEST CONDITIONS AND RESULTS ......................................................................................................................... 11 3.1. CONDUCTED EMISSIONS TEST ....................................................................................................................................... 11 3.2. RADIATED EMISSIONS AND BAND EDGE .......................................................................................................................... 14 3.3. MAXIMUM PEAK CONDUCTED OUTPUT POWER ............................................................................................................... 25 3.4. 20DB BANDWIDTH ..................................................................................................................................................... 26 3.5 FREQUENCY SEPARATION ..................................................................................................................................................... 30 3.5. NUMBER OF HOPPING FREQUENCY ................................................................................................................................. 32 3.6. TIME OF OCCUPANCY (DWELL TIME) .............................................................................................................................. 34 3.7. OUT‐OF‐BAND EMISSIONS ............................................................................................................................................ 38 3.8. PSEUDORANDOM FREQUENCY HOPPING SEQUENCE .......................................................................................................... 44 3.9. ANTENNA REQUIREMENT.......................................................................................................................…

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Test Model：Defunc TRUE MUTE Radiated Emission Conducted Emission