2AKFED46MBluetooth headphone

678910 MUTE II QUICK START GUIDE Simplify your listening experience by using the Defunc AI App. It allows your headphones to communicate with your devices using voice interaction or features available directly in the app. The Defunc AI App features a companion app ecosystem, for you to add your own preferences and needs to. Get features such as translation services, AI Chat, and other custom tools. DEFUNC AI APP FEATURES INCLUDE: • AI Chat • Voice filters for messages • Customer service, FAQs, and manuals • A library of additional features and apps APP FEATURES: RULES AND REGULATIONS 1/2RULES AND REGULATIONS 2/2 HOW DO I MAKE A CLAIM ON MY DEFUNC PRODUCT? If you receive your goods and discover they are damaged or have other defects, please contact customer service, and provide us with your contact and purchase details. defunc.com/support/ - Scroll down and click on the <GET IN TOUCH> button. COMPLIANCE WITH FCC REGULATIONS Caution! The user is cautioned that changes or modifica- tions 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 accor- dance 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 on and off, 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 that differs 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. THE SPECIFICATION AND EXTERNAL APPEARANCE OF THE HEADPHONES MAY BE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE. If at any time in future you should need to dispose of this product, please note that waste electrical products should not be disposed of with household waste. Please recycle where facilities exist. Check with your local authority or retailer for recycling advice. EU DECLARATION OF CONFORMITY The Art of Utility AB hereby declares that Defunc MUTE II complies with Directive 2014/53/EU. The full text of the EU Declaration of Conformity is available on: defunc.com/documents. AI-APP 12345 AUTO-PAIR & CONNECTING 1. Turn on the headphones — pairing mode activates automatically on first use. 2. Open Bluetooth settings on your device. • If pairing does not start automatically, reset the headphones and try again. BUTTON CONTROLS 1. Play / Pause Press the power button once 2. Next Track Press and hold the volume + button for 2 seconds 3. Previous Track Press and hold the volume – button for 2 seconds CALLS 1. Answer / End Call Press the power button once 2. Reject Call Press and hold the power button for 2 seconds VOICE ASSISTANT Press the play/pause button and hold for 3 seconds NOISE CONTROL MODES • ANC • Transparency • Normal Press the ANC button once to switch between the different listening modes. When the headphones are turned on, they will resume the same mode that was active when they were turned off. RESET 1. Turn off the headphones by pressing the power button for 3 seconds 2. Press and hold the power button for 10 seconds 3. The headphones will reset and enter pairing mode LED INDICATOR • Flashing Blue Light – Pairing mode • Solid White Light – Connected • White Light – ON: charging / OFF: fully charged • Green Light - ANC mode is on POWER ON Press and hold the power button for 3 seconds until the LED indicator lights up. POWER OFF Press and hold the power button for 3 seconds until the LED indicator turns off. 1. Power Button 2. LED Light 3. Volume + 4. Volume - 5. Charging port / Aux in audio port 6. Ventilation 7. ANC Button 8. Microphones PRODUCT OVERVIEW GET STARTED 3. 4. 1. 5. 7. 6. 8. 2. FULL MANUAL For full instructions, and the complete user manual, download the Manual PDF file from defunc.com. To the full manual: https://defunc.com/support/ ENJOY YOUR NEW DEFUNC PRODUCT! Get started by downloading the Defunc AI App where you download your apps. Access tips and tricks on how to optimize your Defunc MUTE II headphones, and explore additional features for your device. Download here: INCLUDED IN BOX • Defunc MUTE II Headphones • Type USB to C charging cable CHARGING 1. Connect the USB-C cable to the charging port on the headphones. 2. Plug the other end into a USB power source (5 W max). 3. The LED indicator lights up while charging. 4. When fully charged, the LED light turns off. • Caution: Use only certified charging accessories.

Bridgeport Advisory LLC 3330 W 38TH PL, CHICAGO, IL 60632, United States 0037566148 [email protected] (708) 680-6688 Bridgeport Advisory LLC Mr Yong Liu Managing Member Bridgeport Advisory LLC

Due Diligence Letter For Certification Service in the USA Federal Communications Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern FCC ID Model name 2AKFED46M Defunc MUTE II, D4611, D4612, D4614 Pursuant to KDB 986446 D01 Covered Equipment Guidance the evaluation of the product above shows compliance for the following reasons: Compliance Evaluation process Results Inherent compliance The chipset(s) used is not capable of running the cybersecurity and/or anti-virus software Compliance The memory used does not allow the running the cybersecurity and/or anti-virus software Compliance The storage capacity does not allow the running the cybersecurity and/or anti-virus software Compliance The operating system used is not capable of running the cybersecurity and/or anti-virus software Compliance No inherent compliance Based on software bill of material Based on scan for running software on the device Based on filesystem scan for cybersecurity and/or anti-virus software The equipment for which authorization is sought complies with the rules and fulfils the requirements as detailed in the above mentioned KDB. Evaluation performed by Company Name: Shenzhen Huaxia Testing Technology Co., Ltd Contact Name: Yoyo Zhou Address: 1F., Block A of Tongsheng Technology Building, Huahui Road, Dalang Street, Longhua District, Shenzhen, China Phone: +86-755-26648642 Email: [email protected] Signature: Date: 2026-04-23

Externalphotos FCC ID: 2AKFED46M

Internalphotos Antenna FCC ID: 2AKFED46M

SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD 102A,102B,Building2,ShanghenglangNewIndustrialZone,ShanghenglangCommunity, DalangStreet,LonghuaDistrict,Shenzhen,Guangdong,People’sRepublicofChina,518000 Telephone:+86-755-26648640 Fax:+86-755-26648637 Website:www.cqa-cert.com ReportTemplateVersion:V06 ReportTemplateRevisionDate:2026-01-30 RFExposureEvaluationReport Thetestreportiseffectiveonlywithbothsignatureandspecializedstamp,Theresult(s)showninthisreportreferonlyto thesample(s)tested.WithoutwrittenapprovalofCQA,thisreportcan’tbereproducedexceptinfull. ReportNo.:CQASZ20260300528E-03 Applicant:TheArtofUtilityAB AddressofApplicant:Hollandargatan22,11359Stockholm,Sweden EquipmentUnderTest(EUT): EUTName:Bluetoothheadphone ModelNo.: DefuncMUTEII,D4611,D4612,D4614 TestModelNo.: DefuncMUTEII BrandName:Defunc FCCID:2AKFED46M Standards: 47CFRPart1.1307 47CFRPart2.1093 KDB447498D04InterimGeneralRFExposureGuidancev01 DateofReceipt:2026-03-17 DateofTest: 2026-03-17to2026-03-26 DateofIssue:2026-4-23 TestResult:PASS* *Intheconfigurationtested,theEUTcompliedwiththestandardsspecifiedabove. TestedBy: (LewisZhou) ReviewedBy: (TimoLei) ApprovedBy: (JackAi) SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD. ReportNo.:CQASZ20260300528E-03 Page:2of8 1Version RevisionHistoryOfReport ReportNo.Version Description IssueDate CQASZ20260300528E-03Rev.01 Initialreport 2026-4-23 SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD. ReportNo.:CQASZ20260300528E-03 Page:3of8 2Contents Page 1VERSION............................................................................................................................................................................2 2CONTENTS........................................................................................................................................................................3 3GENERALINFORMATION..............................................................................................................................................4 3.1CLIENTINFORMATION...................................................................................................................................................4 3.2GENERALDESCRIPTIONOFEUT...................................................................................................................................4 3.3GENERALDESCRIPTIONOFBLE...................................................................................................................................4 3.4GENERALDESCRIPTIONOFBT......................................................................................................................................4 4RFEXPOSUREEVALUATION.......................................................................................................................................5 4.1SAREVALUATIONFORPORTABLECONDITION...........................................................................................................5 4.1.1StandardRequirement......................................................................................................................................5 4.1.2Limits....................................................................................................................................................................5 4.1.3SARExclusionEvaluationResult...................................................................................................................7 SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD. ReportNo.:CQASZ20260300528E-03 Page:4of8 3GeneralInformation 3.1ClientInformation Applicant:TheArtofUtilityAB AddressofApplicant:Hollandargatan22,11359Stockholm,Sweden Manufacturer: GuangzhouHavitTechnologyCo.,Ltd. AddressofManufacturer: Room1307,13F,BuildingBandC,PolyWorldTradeCenterPhaseII,1000 XingangdongRoad,HaizhuDistrict,GuangzhouCity,Guangdong,China Factory: GuangzhouHavitTechnologyCo.,Ltd. AddressofFactory: Room1307,13F,BuildingBandC,PolyWorldTradeCenterPhaseII,1000 XingangdongRoad,HaizhuDistrict,GuangzhouCity,Guangdong,China 3.2GeneralDescriptionofEUT ProductName: Bluetoothheadphone ModelNo.: DefuncMUTEII,D4611,D4612,D4614 TestModelNo.: DefuncMUTEII TradeMark: Defunc SoftwareVersion: V6.0 HardwareVersion: V1.1 PowerSupply: lithiumbattery:3.7V400mAh1.48Wh,ChargebyDC5Vforadapter SimultaneousTransmissionSimultaneousTXissupportedandevaluatedinthisreport. SimultaneousTXisnotsupported. 3.3GeneralDescriptionofBLE OperationFrequency:2402MHz~2480MHz ModulationType:GFSK TransferRate:1Mbps/2Mbps NumberofChannel:40 ProductType:MobilePortableFixLocation AntennaType: PCBantenna AntennaGain: 2.83632dBi 3.4GeneralDescriptionofBT OperationFrequency:2402MHz~2480MHz ModulationType:GFSK,π/4DQPSK,8DPSK TransferRate:1Mbps/2Mbps/3Mbps NumberofChannel:79 ProductType:MobilePortableFixLocation AntennaType: PCBantenna AntennaGain: 2.83632dBi SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD. ReportNo.:CQASZ20260300528E-03 Page:5of8 4RFExposureEvaluation 4.1 SAREvaluationforPortablecondition 4.1.1StandardRequirement 447498D04InterimGeneralRFExposureGuidancev01 3.2.SARTestReductionGuidance SARtestreductionprocedures[Glossary]allowusingaparticularsetoftestdataasrepresentative ofother,similar,testconditions.Thismaybeappliedfordatawithindifferenttestpositions(e.g.body, head,extremity),wirelessmodes(e.g.Wi-Fi,cellular),andfrequencybands.Thistestreductionprocess providesfortheuseoftestdataforonespecificchannel,whilereferencingtothosedatafordemonstrating complianceinotherrequiredchannelsforeachtestpositionofanexposurecondition,withintheoperating modeofafrequencyband.Thisislimitedspecificallytowhenthereported1-gor10-gSARforthemid- bandorhighestoutputpowerchannelmeetsanyofthefollowingconditions. 4.1.2Limits SAR-basedthresholdsarederivedbasedonfrequency,power,andseparationdistanceoftheRF source.Theformuladefinesthethresholdsingeneralforeitheravailablemaximumtimeaveragedpoweror maximumtime-averagedERP,whicheverisgreater. IftheERPofadeviceisnoteasilydetermined,suchasforaportabledevicewithasmallform factor,theapplicantmayusetheavailablemaximumtime…

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Summary ITEM Model Name 2400Mhz 2450Mhz 2500Mhz 2400Mhz 2450Mhz 2500Mhz 2.75168 2.83632 2.63027 1.1318 1.7495 2.3976 MAX.Gain Polarization Azimuth Beam pattern Impedance Antenna Length Manufacture Antenna Photo & Length(mm) Horizontal and Vertical Omni-directional 50 Ohm 10.3mm Shenzhen Junyue Internet Technology Co., Ltd Inverted F Antenna Specification ANT SPEC 2.4G onboardANT HorizontalVertical 2.83632dBi Center Frequency Address：5th Floor, No. 37, Langkou Industrial Park, Langkou Community, Dalang Street, Longhua District, Shenzhen City Horizontal:2400MHz 2450MHz 2500MHz Power(dBi) Max:8 Min:-40 Scale:5/div Frequency(MHz) (MHz) 2400 2450 2500 2.83632-26.4975-2.86975 2.63027-20.0188-2.77921 MaxMinAvg 2.75168-25.0717-2.45237 Gain(dBi) Vertical:2400MHz 2450MHz 2500MHz Power(dBi) Max:8 Min:-30 Scale:5/div Frequency(MHz) (MHz) 2400 2450 2500 1.7495-22.5492-2.6795 2.3976-25.4803-3.7529 Gain(dBi) MaxMinAvg 1.1318-18.1497-5.0331

SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD 102A,102B,Building2,ShanghenglangNewIndustrialZone,ShanghenglangCommunity, DalangStreet,LonghuaDistrict,Shenzhen,Guangdong,People’sRepublicofChina,518000 Telephone:+86-755-26648640 Fax:+86-755-26648637 Website:www.cqa-cert.com ReportTemplateVersion:V06 ReportTemplateRevisionDate:2026-01-30 TestReport Thetestreportiseffectiveonlywithbothsignatureandspecializedstamp,Theresult(s)showninthisreportreferonlyto thesample(s)tested.WithoutwrittenapprovalofCQA,thisreportcan’tbereproducedexceptinfull. ReportNo.:CQASZ20260300528E-01 Applicant:TheArtofUtilityAB AddressofApplicant:Hollandargatan22,11359Stockholm,Sweden EquipmentUnderTest(EUT): Product: Bluetoothheadphone ModelNo.: DefuncMUTEII,D4611,D4612,D4614 TestModelNo.: DefuncMUTEII BrandName: Defunc FCCID: 2AKFED46M Standards:47CFRPart15,SubpartC KDB558074D0115.247MeasGuidancev05r02 ANSIC63.10:2020 DateofReceipt:2026-03-17 DateofTest: 2026-03-17to2026-03-26 DateofIssue:2026-4-23 TestResult:PASS* *Intheconfigurationtested,theEUTcompliedwiththestandardsspecifiedabove. TestedBy: (LewisZhou) ReviewedBy: (TimoLei) ApprovedBy: (JackAi) SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260300528E-01 Page:2of83 1Version RevisionHistoryOfReport ReportNo.Version Description IssueDate CQASZ20260300528E-01Rev.01 Initialreport 2026-4-23 SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260300528E-01 Page:3of83 2TestSummary TestItemTestRequirementTestmethodResult AntennaRequirement47CFRPart15.203/PASS ACPowerLineConducted Emission 47CFRPart15,SubpartCSection 15.207 ANSI C63.10-2020+Cor. 1-2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS ConductedPeakOutput Power 47CFRPart15.247 ANSI C63.10-2020+Cor. 1-2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS 20dBOccupiedBandwidth47CFRPart15.247 ANSI C63.10-2020+Cor. 1-2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS CarrierFrequencies Separation 47CFRPart15.247 ANSI C63.10-2020+Cor. 1-2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS HoppingChannelNumber47CFRPart15.247 ANSI C63.10-2020+Cor. 1-2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS DwellTime47CFRPart15.247 ANSI C63.10-2020+Cor. 1-2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS PseudorandomFrequency HoppingSequence 47CFRPart15.247 ANSI C63.10-2020+Cor. 1-2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS Band-edgeforRF ConductedEmissions 47CFRPart15.247 ANSI C63.10-2020+Cor. 1-2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS RFConductedSpurious Emissions 47CFRPart15.247 ANSI C63.10-2020+Cor. 1-2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS RadiatedSpurious emissions 47CFRPart15.209 ANSI C63.10-2020+Cor. 1-2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS Restrictedbandsaround fundamentalfrequency (RadiatedEmission) 47CFRPart15.205/15.209 ANSI C63.10-2020+Cor. 1-2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260300528E-01 Page:4of83 Remark: Thetestedsample(s)andthesampleinformationareprovidedbytheclient. Tx:InthiswholereportTx(ortx)meansTransmitter. Rx:InthiswholereportRx(orrx)meansReceiver. RF:InthiswholereportRFmeansRadiatedFrequency. CH:InthiswholereportCHmeanschannel. Volt:InthiswholereportVoltmeansVoltage. Temp:InthiswholereportTempmeansTemperature. Humid:InthiswholereportHumidmeanshumidity. Press:InthiswholereportPressmeansPressure. N/A:Inthiswholereportnotapplication SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260300528E-01 Page:5of83 3Contents Page 1VERSION..........................................................................................................................................................................2 2TESTSUMMARY............................................................................................................................................................3 3CONTENTS......................................................................................................................................................................5 4GENERALINFORMATION...........................................................................................................................................6 4.1CLIENTINFORMATION.................................................................................................................................................6 4.2GENERALDESCRIPTIONOFEUT.................................................................................................................................6 4.3ADDITIONALINSTRUCTIONS........................................................................................................................................8 4.4TESTENVIRONMENT...................................................................................................................................................9 4.5DESCRIPTIONOFSUPPORTUNITS...............................................................................................................................9 4.6TESTCONFIGURATION................................................................................................................................................9 4.7STATEMENTOFTHEMEASUREMENTUNCERTAINTY..................................................................................................10 4.8TESTLOCATION........................................................................................................................................................11 4.9TESTFACILITY..........................................................................................................................................................11 4.10ABNORMALITIESFROMSTANDARDCONDITIONS....................................................................................................11 4.11OTHERINFORMATIONREQUESTEDBYTHECUSTOMER..........................................................................................11 4.12EQUIPMENTLIST............................................................................................................................................…

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Setupphotos 1Photographs-EUTTestSetup 1.1RadiatedEmission 9KHz~30MHz: 30MHz~1GHz: FCC ID: 2AKFED46M Above1GHz: 1.2ConductedEmission 1.3RFConductedmeasurement