UHB-SX-991Neckband headphones

Double press“ ”to activated Siri Double press “ ” to switch call between Mobile and headset Red light flashe once Chinese/English Shift: Long press the " " and volume " "Simultaneously for 2 seconds Long press “ ” to reject calls *1.... ①②③ ④⑤⑥⑦ Du Different music effects (Bass boostNormalHigh Pitch )have been setu up inside the headset *2 EQ Shift : Double press“ ” button to choose your favorite sounds effect when music playing Headset 1pcs USB charging cable 1pcs Earplugs 2pcs User Manual 1pcs Connect with Mobile phone Note 1.Swith to on headset auto pairing state Blue and red light flashes alternately 2.Turn on your Bluetooth device on your mobile phone. 3. Find the headset name of “SX-991” to geting connect in your list ,headset prompts “ device connected” After successful pairing, the device will be automatically reconnected when used again. If the connection fails, the headset will automatically enter the pairing state. Please manually pair the device (operation as shown in the picture). SX-991 Bluetooth Multifunctional Button ①② ③④ ⑤⑥ ⑦ LED indicator *..... *1 *1 Calls Management Short press answer and end call Answer/ Hang up *1 reject call *2 switch calls Smart voice *2 The red and blue light flashes 3 times Factory data reset Charging instructions The headset cann't be turned on during the charging process,the red light goes off when fully charged In charging state to compate factory setting The battery warning Caution: Do not disassemble, bump, crush or throw into fire. Do not continue to use if severe swelling occurs. Do not place in a high temperature environment. 1.Power On: Swith to "On" headset ativated with voice remind Power on Vibration once Blue light is on 2.Power off: Swith to “OFF” power off 1. Turn off Bluetooth on mobile and headset 3.Turn on phone 1 Bluetooth and select SX-991 gets connected Turn on the headset SX-991 SX-991 SX-991 Choice SX-991 gets connected SX-991 For user’s safety, please read this manual before using the headset. The following matters should be paid attention to when using headphones : Please avoid under the high volume mode, because that will leads to hearing loss caused by noise. If you are in bad condition of potentially dangerous, please stop using headphones, in order to ensure safety. Users should be reasonable control volume and time when listening to the headphones. The volume should not be too high, cause you can't hear the voice around the volumeif volume is too high that may appear tinnitus, please lower down the volume. Don't recommend to listening music while driving. With dry soft cloth to clean the headset! Should avoid the headphone into the waterthat will cause headset damage. If you feel obvious discomfort, stimulation, or other adverse reaction when use the headset, should immediately stop using it. The headphones should not be stored or used in temperature below -15°C (5°F) or higher than 55°C ( 131°F ), otherwise will reduce headphones or battery life. Charging and Battery: Please charge the headsets with original charging cable, it maydamage the battery or the headset if you are using improper charging cable. This headset has built-in rechargeable battery, so do not attempt to remove the battery from the headset to avoid damaging it. The battery (battery pack or combination) shall not be exposed to such conditions as sunshine, fire roasting, or similar overheating. If not properly change the battey, there will be danger of explosion. Should only use the same type of battery. The power adapter for charging the product is 5V/1A, if use high voltage power adapter for charging the machine, there is the risk of burning machine! Details of products : ON/OFF Volume /Previous Volume /Next Earbud Retract Button(R) Earbud Retract Button(L) Power On/Off Connect with two phones Turn off Bluetooth device on mobile Turn off headset 2.Connect with second mobile phone Music/Volume Control Function Button Operation Short press Short press Long press Long press Play/Pause Previous song Next song Volume up Volume down Correspond With ：V6.0 Support ：HSP . HFP . A2DP . AVRCP Transmitting Power : Class 2 Working Distance : ≤10m Frequency Range : 2.402GHz-2.480GHz Charging time : ≤2.5 hours Talk time : ≥35 hours Music Time: ≥30 hours standby time : ≥300 hours USB power supply ：≤5V/1A Technical lndex Tips: Wrong way of setting back the wire Press the Earbud Retract Button directly. In this way, the earbuds will hit the headset aggressively. Correct way of setting back the wire In order to prolong the working life of the headset, please setback the wire slowly, and follow the steps shown below. Hook the wire by your hands. Press the Earbud Retract Button to let the Earbuds setback in your hands. Let go of your curved fingers. Press the Earbud Retract Button to allow the rest of the earbuds to retract inside headset. Phone 1 Phone 1 Phone 2 Phone 2 Package content: Bluetooth Bluetooth Bluetooth Bluetooth Bluetooth Bluetooth Bluetooth Bluetooth Device Device Device Device Device Pairing SX-991 Neckband headphones Any changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. 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: 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 p…

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ShenzhenShuaixianElectronicEquipmentCo.,Ltd. No.10,Lane3,LongxingRd.,DakanglongVillage,HenggangTown,LonggangDist., Shenzhen,China FederalCommunicationsCommission AuthorizationandEvaluationDivision EquipmentAuthorizationBranch 7435OaklandMillsRoad Columbia,MD21046 Date：July14,2026 U.S.AgentDesignation {ShenzhenShuaixianElectronicEquipmentCo.,Ltd.}acknowledgestheirconsentforthefollowingcontact locatedintheUnitedStatestoactastheiragentforserviceofprocessfortheequipmentforwhichauthorization issought(FCCID:UHB-SX-991): NameandcompanyofU.S.agent:BridgeportAdvisoryLLC PhysicalU.S.addressofagent:3330W38THPL,CHICAGO,IL60632,UnitedStates FRNofU.S.agent:0037566148 EmailaddressofU.S.agent:[email protected] ContactNO.:(708)680-6688 BridgeportAdvisoryLLCacknowledgestheirobligationtoacceptserviceofprocessonbehalfof{Shenzhen ShuaixianElectronicEquipmentCo.,Ltd.}. {ShenzhenShuaixianElectronicEquipmentCo.,Ltd.}withtheFRN[0015339963]acceptsitsobligationto maintainanagentforserviceofprocessintheUnitedStatesfornolessthanoneyearaftereitherthegranteehas permanentlyterminatedallmarketingandimportationoftheapplicableequipmentwithintheU.S.,orthe conclusionofanyCommission-relatedadministrativeorjudicialproceedinginvolvingtheequipment,whicheveris later. Bysigningthisform,weconfirmtheaboveandthatweareawareoftheapplicationrequirementslistedunder§ 2.911(d)(7). TheinformationprovidedinthisletterisbasedonthereferencedrulepartsofTitle47oftheCFRaswellasKDB 986446D01. Anexpirationdateforthisletterdoesnotexist.IncasetheU.S.agentchanges,thegranteeisobligatedtonotify theFCCwithin30daysviathegrantingTCB. Sincerely, Signature YeJieBin GeneralManager ShenzhenShuaixianElectronicEquipmentCo.,Ltd. Signature MrYongLiu ManagingMember BridgeportAdvisoryLLC 4 8 _ [ m o d e l ] U S _ A g e n t _ 2 . 9 1 1 ( d ) ( 7 ) - U , V 0 5

Covered Equipment Attestation 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 Pursuant to Section 2.911(d)(5)(i)-(ii) of the Commission’s Rules (47 C.F.R.) we attest as follows for the product listed below: FCC ID Model name UHB-SX-991 SX-991, SX-990, SX-808, SX-888, SX-888Pro, SX-991A, SX-802 We, Applicant Company Name: Shenzhen Shuaixian Electronic Equipment Co., Ltd. Address: No. 10, Lane 3, Longxing Rd., Dakanglong Village, Henggang Town, Longgang Dist., Shenzhen, China Phone: +86-755-61269250 certify that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. This includes the cybersecurity and anti-virus software produced or provided by Kaspersky Lab, Inc. or any of ist successors and assignees. We certify that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2026-07-14 Signature Date Name / Title: Jiebin Ye / General Manager Company: Shenzhen Shuaixian Electronic Equipment Co., Ltd. Address: No. 10, Lane 3, Longxing Rd., Dakanglong Village, Henggang Town, Longgang Dist., Shenzhen, China Phone: +86-755-61269250 Fax: N/A E-Mail: [email protected]

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 UHB-SX-991 SX-991, SX-990, SX-808, SX-888, SX- 888Pro, SX-991A, SX-802 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: 2026-07-13

Confidentiality Request Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we request confidentiality for the documentation of the following products: FCC ID Model name UHB-SX-991 SX-991, SX-990, SX-808, SX-888, SX- 888Pro, SX-991A, SX-802 For the products listed above, we request permanent confidentiality for all applicable exhibits as there are: • the Operational Description • the Block Diagram • the Schematics • the Part List • the Tune up Information The above listed exhibits contain trade secrets and proprietary information that could be of benefit to our competitors. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2026-07-14 Signature Date Name / Title: Jiebin Ye / General Manager Company: Shenzhen Shuaixian Electronic Equipment Co., Ltd. Address: No. 10, Lane 3, Longxing Rd., Dakanglong Village, Henggang Town, Longgang Dist., Shenzhen, China Phone: +86-755-61269250 Fax: N/A E-Mail: [email protected]

ShenzhenShuaixianElectronicEquipmentCo.,Ltd. ModelConfirmationLetter We,ShenzhenShuaixianElectronicEquipmentCo.,Ltd.certifytheproduct: Neckbandheadphones ModelNo.:SX-991,SX-990,SX-808,SX-888,SX-888Pro,SX-991A,SX-802 FCCID:UHB-SX-991 Theirelectricalcircuitdesign,layout,componentsusedandinternalwiringareidentical, Onlythecolorweredifferent. Signiture: GranteeContact:YeJieBin CompanyName:ShenzhenShuaixianElectronicEquipmentCo.,Ltd. Date:July14,2026

ReportNo.:CQASZ20260601352E Photographs-EUTConstructionalDetails FCC ID: UHB-SX-991 ReportNo.:CQASZ20260601352E ReportNo.:CQASZ20260601352E ReportNo.:CQASZ20260601352E

丝印尺寸：12.8*11.1MM SX-991-57丝印图 FCC ID:UHB-SX-991 Model:SX-991 Made in China 6F Lot No FCC ID:UHB-SX-991 Model:SX-991 Made in China 6F Lot No

ReportNo.:CQASZ20260601352E Photographs-EUTConstructionalDetails FCC ID: UHB-SX-991 ReportNo.:CQASZ20260601352E Antenna ReportNo.:CQASZ20260601352E

ShenzhenHuaxiaTestingTechnologyCo.,Ltd. SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD102A,102B,Building2,ShanghenglangNew IndustrialZone,ShanghenglangCommunity,DalangStreet,LonghuaDistrict,Shenzhen,Guangdong, People’sRepublicofChina,518000 Telephone:+86-755-26648640 Fax:+86-755-26648637 Website:www.cqa-cert.com ReportTemplateVersion:V04 ReportTemplateRevisionDate:2018-07-06 TESTREPORT Thetestreportiseffectiveonlywithbothsignatureandspecializedstamp,Theresult(s)showninthisreportreferonlytothe sample(s)tested.WithoutwrittenapprovalofCQA,thisreportcan’tbereproducedexceptinfull. ReportNo.: CQASZ20260601352E-02 Applicant:ShenzhenShuaixianElectronicEquipmentCo.,Ltd. AddressofApplicant:No.10,Lane3,LongxingRd.,DakanglongVillage,HenggangTown,Longgang Dist.,Shenzhen,China EquipmentUnderTest(EUT): EUTName:Neckbandheadphones ModelNo.:SX-991,SX-990,SX-808,SX-888,SX-888Pro,SX-991A,SX-802 TestModelNo.:SX-991 BrandName:N/A FCCID:UHB-SX-991 Standards: 47CFRPart1.1307 47CFRPart1.1310 KDB447498D01GeneralRFExposureGuidancev06 DateofReceipt:2026-06-26 DateofTest: 2026-06-26to2026-07-06 DateofIssue: 2026-07-13 TestResult:PASS TestedBy: (LewisZhou) ReviewedBy: (TimoLei) ApprovedBy: (JackAi) ShenzhenHuaxiaTestingTechnologyCo.,Ltd ReportNo.:CQASZ20260601352E-02 Page: 2 of 6 1.Version RevisionHistoryOfReport ReportNo.Version Description IssueDate CQASZ20260601352E-02Rev.01 Initialreport ShenzhenHuaxiaTestingTechnologyCo.,Ltd ReportNo.:CQASZ20260601352E-02 Page: 3 of 6 2.Contents 1.VERSION....................................................................................................................................................................................2 2.CONTENTS................................................................................................................................................................................3 3.GENERALINFORMATION....................................................................................................................................................4 4.CLIENTINFORMATION........................................................................................................................................................4 5.GENERALDESCRIPTIONOFEUT......................................................................................................................................4 RFEXPOSUREEVALUATION..................................................................................................................................................5 RFEXPOSURECOMPLIANCEREQUIREMENT.............................................................................................................................5 StandardRequirement........................................................................................................................................................5 Limits......................................................................................................................................................................................5 EUTRFExposure................................................................................................................................................................6 ShenzhenHuaxiaTestingTechnologyCo.,Ltd ReportNo.:CQASZ20260601352E-02 Page: 4 of 6 3.GeneralInformation 4.ClientInformation Applicant: ShenzhenShuaixianElectronicEquipmentCo.,Ltd. AddressofApplicant: No.10,Lane3,LongxingRd.,DakanglongVillage,HenggangTown, LonggangDist.,Shenzhen,China Manufacturer: ShenzhenShuaixianElectronicEquipmentCo.,Ltd. AddressofManufacturer: No.10,Lane3,LongxingRd.,DakanglongVillage,HenggangTown, LonggangDist.,Shenzhen,China Factory: ShenzhenShuaixianElectronicEquipmentCo.,Ltd. AddressofFactory: No.10,Lane3,LongxingRd.,DakanglongVillage,HenggangTown, LonggangDist.,Shenzhen,China 5.GeneralDescriptionofEUT ProductName:Neckbandheadphones ModelNo.:SX-991,SX-990,SX-808,SX-888,SX-888Pro,SX-991A,SX-802 TestModelNo.:SX-991 TradeMark:N/A SoftwareVersion: V2 HardwareVersion: V4 ModulationTechnique: FrequencyHoppingSpreadSpectrum(FHSS) ModulationType: GFSK,π/4DQPSK TransferRate: 1Mbps/2Mbps NumberofChannel: 79 HoppingChannelType: AdaptiveFrequencyHoppingsystems AntennaType: PCBantenna AntennaGain: -0.01dBi ProductType: MobilePortableFixLocation PowerSupply: Li-ionbatteryDC3.7V300mAh,ChargebyDC5Vforadapter ShenzhenHuaxiaTestingTechnologyCo.,Ltd ReportNo.:CQASZ20260601352E-02 Page: 5 of 6 RFExposureEvaluation RFExposureComplianceRequirement StandardRequirement AccordingtoKDB447498D01GeneralRFExposureGuidancev06 4.3.1.StandaloneSARtestexclusionconsiderations UnlessspecificallyrequiredbythepublishedRFexposureKDBprocedures,standalone1- gheadorbodyand10-gextremitySARevaluationforgeneralpopulationexposure conditions,bymeasurementornumericalsimulation,isnotrequiredwhenthe correspondingSARExclusionThresholdcondition,listedbelow,issatisfied. Limits The1-gand10-gSARtestexclusionthresholdsfor100MHzto6GHzattestseparation distances≤50mmaredeterminedby: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]·[√f(GHz)]≤3.0for1-gSARand≤7.5for10-gextremitySAR,where f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation17 Theresultisroundedtoonedecimalplaceforcomparison Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤50mm andfortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtest separationdistanceis<5mm,adistanceof5mmisappliedtodetermineSARtestexclusion ShenzhenHuaxiaTestingTechnologyCo.,Ltd ReportNo.:CQASZ20260601352E-02 Page: 6 of 6 EUTRFExposure 1)ForBT MeasurementData Worstcase:8DPSK TestChannel PeakOutputPower (dBm) Tuneuptolerance (dBm) Maximumtune-upPower (dBm)(mW) Lowest(2402MHz) 3.323.5±14.52.818 Middle(2441MHz) 3.674.0±153.162 Highest(2480MHz) 3.193.5±14.52.818 Worstcase:8DPSK Channel MaximumtuneupPower (mW) Calculatedvalue Exclusion threshold Lowest (2402MHz) 2.8180.874 3.0 Middle (2441MHz) 3.1620.988 Highest (2480…

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Antenna Specification 1. Summary Manufacturer Shenzhen Shuaixian Electronic Equipment Co., Ltd. Address No. 10, Lane 3, Longxing Rd., Dakanglong Village, Henggang Town, Longgang Dist., Shenzhen, China Model SX-133 Frequency Range 2400 – 2500 MHz SVWR ≤ 2.00 Typical Antenna Gain Maximum Gain is -0.01dBi Antenna Type PCB Antenna Impedance 50 Ohm Radiation OMNI Polarization Linear 2. Antenna Dimension 3. Antenna Gain and Efficiency

1 CQASZ20260601352E-01 2 Summary NO.ItemVerdict 120dBEmissionBandwidthPass 2OccupiedChannelBandwidthPass 3MaximumconductedoutputpowerPass 4CarrierfrequencyseparationPass 5TimeofoccupancyPass 6NumberofhoppingchannelsPass 7BandedgemeasurementsPass 8ConductedSpuriousEmissionPass 9EmissionsinRestrictedBandsPass 10DutyCyclePass 3 AppendixA:20dBEmissionBandwidth TestResult NO. Test Condition Test Mode Freq (MHz) RateAntenna BW (MHz) FL (MHz) FH (MHz) Limit (MHz) Verdict 1NTNVDH524021MbpsANT10.992401.452402.44-- 2NTNVDH524411MbpsANT10.992440.452441.44-- 3NTNVDH524801MbpsANT10.962479.482480.44-- 4NTNV2DH524022MbpsANT11.322401.292402.61-- 5NTNV2DH524412MbpsANT11.322440.292441.61-- 6NTNV2DH524802MbpsANT11.322479.292480.61-- 7NTNV3DH524023MbpsANT11.302401.312402.61-- 8NTNV3DH524413MbpsANT11.302440.302441.60-- 9NTNV3DH524803MbpsANT11.302479.302480.60-- 4 TestGraphs NTNV_DH5_2402_1Mbps NTNV_DH5_2441_1Mbps NTNV_DH5_2480_1Mbps NTNV_2DH5_2402_2Mbps 5 NTNV_2DH5_2441_2Mbps NTNV_2DH5_2480_2Mbps NTNV_3DH5_2402_3Mbps 6 NTNV_3DH5_2441_3Mbps NTNV_3DH5_2480_3Mbps 7 AppendixB:OccupiedChannelBandwidth TestResult NO. Test Condition Test Mode Freq (MHz) RateAntenna 99%OBW (MHz) Limit (MHz) FL (MHz) FH (MHz) Verdict 1NTNVDH524021MbpsANT10.88-2401.512402.40Pass 2NTNVDH524411MbpsANT10.88-2440.512441.39Pass 3NTNVDH524801MbpsANT10.87-2479.512480.38Pass 4NTNV2DH524022MbpsANT11.20-2401.362402.56Pass 5NTNV2DH524412MbpsANT11.21-2440.352441.56Pass 6NTNV2DH524802MbpsANT11.21-2479.352480.56Pass 7NTNV3DH524023MbpsANT11.21-2401.342402.55Pass 8NTNV3DH524413MbpsANT11.22-2440.342441.55Pass 9NTNV3DH524803MbpsANT11.21-2479.342480.55Pass 8 TestGraphs NTNV_DH5_2402_1Mbps NTNV_DH5_2441_1Mbps NTNV_DH5_2480_1Mbps NTNV_2DH5_2402_2Mbps 9 NTNV_2DH5_2441_2Mbps NTNV_2DH5_2480_2Mbps NTNV_3DH5_2402_3Mbps 10 NTNV_3DH5_2441_3Mbps NTNV_3DH5_2480_3Mbps 11 AppendixC:Maximumconductedoutputpower TestResult NO. Test Condition Test Mode Freq (MHz) DetectorAntenna Conducted PeakPower (dBm) Conducted Limit (dBm) Gain (dBi) EIRP (dBm) EIRP Limit (dBm) Verdict 1NTNVDH52402PeakANT13.13≤300.003.13≤36Pass 2NTNVDH52441PeakANT12.92≤300.002.92≤36Pass 3NTNVDH52480PeakANT12.52≤300.002.52≤36Pass 4NTNV2DH52402PeakANT12.99≤300.002.99≤36Pass 5NTNV2DH52441PeakANT13.47≤300.003.47≤36Pass 6NTNV2DH52480PeakANT13.02≤300.003.02≤36Pass 7NTNV3DH52402PeakANT13.32≤300.003.32≤36Pass 8NTNV3DH52441PeakANT13.67≤300.003.67≤36Pass 9NTNV3DH52480PeakANT13.19≤300.003.19≤36Pass 12 TestGraphs NTNV_DH5_2402_1Mbps_Peak NTNV_DH5_2441_1Mbps_Peak NTNV_DH5_2480_1Mbps_Peak NTNV_2DH5_2402_2Mbps_Peak 13 NTNV_2DH5_2441_2Mbps_Peak NTNV_2DH5_2480_2Mbps_Peak NTNV_3DH5_2402_3Mbps_Peak 14 NTNV_3DH5_2441_3Mbps_Peak NTNV_3DH5_2480_3Mbps_Peak 15 AppendixD:Carrierfrequencyseparation TestResult NO. Test Condition Test Mode Freq (MHz) RateAntenna Result (MHz) Limit (MHz) Verdict 1NTNVDH5FHSS24021MbpsANT11.00≥0.66Pass 2NTNV2DH5FHSS24022MbpsANT11.01≥0.88Pass 3NTNV3DH5FHSS24023MbpsANT10.99≥0.87Pass 16 TestGraphs NTNV_DH5_2402_1Mbps NTNV_2DH5_2402_2Mbps NTNV_3DH5_2402_3Mbps 17 AppendixE:Timeofoccupancy TestResult NO. Test Condition Test Mode Freq (MHz) RateAntenna Burst Width (ms) Total Hops DwellTime (s) Limit (s) Verdict 1NTNVDH1FHSS24021MbpsANT10.38320.12≤0.4Pass 2NTNVDH3FHSS24021MbpsANT11.63160.26≤0.4Pass 3NTNVDH5FHSS24021MbpsANT12.8760.17≤0.4Pass 4NTNV2DH1FHSS24022MbpsANT10.39320.13≤0.4Pass 5NTNV2DH3FHSS24022MbpsANT11.64130.21≤0.4Pass 6NTNV2DH5FHSS24022MbpsANT12.88120.35≤0.4Pass 7NTNV3DH1FHSS24023MbpsANT10.39320.13≤0.4Pass 8NTNV3DH3FHSS24023MbpsANT11.64130.21≤0.4Pass 9NTNV3DH5FHSS24023MbpsANT12.88100.29≤0.4Pass 18 TestGraphs NTNV_DH1_2402_1Mbps NTNV_DH3_2402_1Mbps 19 NTNV_DH5_2402_1Mbps NTNV_2DH1_2402_2Mbps 20 NTNV_2DH3_2402_2Mbps 21 NTNV_2DH5_2402_2Mbps NTNV_3DH1_2402_3Mbps 22 NTNV_3DH3_2402_3Mbps 23 NTNV_3DH5_2402_3Mbps 24 AppendixF:Numberofhoppingchannels TestResult NO. Test Condition Test Mode Freq (MHz) RateAntenna Result (Num) Limit (Num) Verdict 1NTNVDH5FHSS24021MbpsANT179≥15Pass 2NTNV2DH5FHSS24022MbpsANT179≥15Pass 3NTNV3DH5FHSS24023MbpsANT179≥15Pass 25 TestGraphs NTNV_DH5_2402_1Mbps NTNV_2DH5_2402_2Mbps NTNV_3DH5_2402_3Mbps 26 AppendixG:Bandedgemeasurements TestResult NO. Test Condition Test Mode Freq (MHz) RateAntenna Reference (dBm) EmissionLevel (dBm) Limit (dBm) Verdict 7NTNVDH5FHSS24021MbpsANT11.93-45.52≤-18.07Pass 8NTNVDH5FHSS24801MbpsANT12.09-44.72≤-17.91Pass 9NTNV2DH5FHSS24022MbpsANT12.06-45.79≤-17.94Pass 10NTNV2DH5FHSS24802MbpsANT12.1-45.44≤-17.9Pass 11NTNV3DH5FHSS24023MbpsANT11.54-45.68≤-18.46Pass 12NTNV3DH5FHSS24803MbpsANT12-45.14≤-18Pass 1NTNVDH524021MbpsANT12.86-43.46≤-17.14Pass 2NTNVDH524801MbpsANT12.25-44.21≤-17.75Pass 3NTNV2DH524022MbpsANT12.09-45.44≤-17.91Pass 4NTNV2DH524802MbpsANT12.28-45.08≤-17.72Pass 5NTNV3DH524023MbpsANT12.04-44.77≤-17.96Pass 6NTNV3DH524803MbpsANT12.21-45.64≤-17.79Pass 27 TestGraphs NTNV_DH5_2402_1Mbps NTNV_DH5_2480_1Mbps NTNV_2DH5_2402_2Mbps NTNV_2DH5_2480_2Mbps 28 NTNV_3DH5_2402_3Mbps NTNV_3DH5_2480_3Mbps NTNV_DH5_2402_1Mbps 29 NTNV_DH5_2480_1Mbps NTNV_2DH5_2402_2Mbps NTNV_2DH5_2480_2Mbps 30 NTNV_3DH5_2402_3Mbps NTNV_3DH5_2480_3Mbps 31 AppendixH:ConductedSpuriousEmission TestResult NO. Test Condition Test Mode Freq (MHz) RateAntenna FrequencyRange (MHz) Ref Level (MHz) Max Power (dBm) Limit (dBm) Verdict 1NTNVDH524021MbpsANT1 Reference0.12.74// 30～10000.1-46.64≤-17.26Pass 1000～265000.1-36.59≤-17.26Pass 2NTNVDH524411MbpsANT1 Reference0.12.64// 30～10000.1-47.16≤-17.36Pass 1000～265000.1-34.80≤-17.36Pass 3NTNVDH524801MbpsANT1 Reference0.12.22// 30～10000.1-48.75≤-17.78Pass 1000～265000.1-34.61≤-17.78Pass 4NTNV2DH524022MbpsANT1 Reference0.12.1// 30～10000.1-46.94≤-17.90Pass 1000～265000.1-37.06≤-17.90Pass 5NTNV2DH524412MbpsANT1 Reference0.12.7// 30～10000.1-47.03≤-17.30Pass 1000～265000.1-34.47≤-17.30Pass 6NTNV2DH524802MbpsANT1 Reference0.12.3// 30～10000.1-48.22≤-17.70Pass 1000～265000.1-34.17≤-17.70Pass 7NTNV3DH524023MbpsANT1 Reference0.12.11// 30～10000.1-47.60≤-17.89Pass 1000～265000.1-35.87≤-17.89Pass 8NTNV3DH524413MbpsANT1 Reference0.12.69// 30～10000.1-47.43≤-17.31Pass 100…

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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.:CQASZ20260601352E-01 Applicant:ShenzhenShuaixianElectronicEquipmentCo.,Ltd. AddressofApplicant:No.10,Lane3,LongxingRd.,DakanglongVillage,HenggangTown,Longgang Dist.,Shenzhen,China EquipmentUnderTest(EUT): Product: Neckbandheadphones ModelNo.: SX-991,SX-990,SX-808,SX-888,SX-888Pro,SX-991A,SX-802 TestModelNo.:SX-991 BrandName: N/A FCCID: UHB-SX-991 Standards:47CFRPart15,SubpartC KDB558074D0115.247MeasGuidancev05r02 ANSIC63.10:2020 DateofReceipt:2026-06-26 DateofTest:2026-06-26to2026-07-06 DateofIssue:2026-07-13 TestResult:PASS* *Intheconfigurationtested,theEUTcompliedwiththestandardsspecifiedabove. TestedBy: (LewisZhou) ReviewedBy: (TimoLei) ApprovedBy: (JackAi) SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260601352E-01 Page:2of38 1Version RevisionHistoryOfReport ReportNo.Version Description IssueDate CQASZ20260601352E-01Rev.01 Initialreport 2026-07-13 SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260601352E-01 Page:3of38 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.:CQASZ20260601352E-01 Page:4of38 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.:CQASZ20260601352E-01 Page:5of38 3Contents Page 1VERSION..........................................................................................................................................................................2 2TESTSUMMARY............................................................................................................................................................3 3CONTENTS......................................................................................................................................................................5 4GENERALINFORMATION...........................................................................................................................................6 4.1CLIENTINFORMATION.................................................................................................................................................6 4.2GENERALDESCRIPTIONOFEUT.................................................................................................................................6 4.3…

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