2BX4A-S27Open Bluetooth headset

S27-OWS S27-OWS 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. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this 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. RF Exposure Information The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. FCC Statement

DNT2608126272R12932-P01Page: 1 of 7 PHOTOGRAPHSOFEUT FCCID:2BX4A-S27 ExternalPhotos ExternalPhotos(Leftearphone) DNT2608126272R12932-P01Page: 2 of 7 ExternalPhotos(Leftearphone) ExternalPhotos(Leftearphone) DNT2608126272R12932-P01Page: 3 of 7 ExternalPhotos(Leftearphone) ExternalPhotos(Leftearphone) DNT2608126272R12932-P01Page: 4 of 7 ExternalPhotos(Leftearphone) ExternalPhotos(Rightearphone) DNT2608126272R12932-P01Page: 5 of 7 ExternalPhotos(Rightearphone) ExternalPhotos(Rightearphone) DNT2608126272R12932-P01Page: 6 of 7 ExternalPhotos(Rightearphone) ExternalPhotos(Rightearphone) DNT2608126272R12932-P01Page: 7 of 7 ExternalPhotos(Rightearphone) --END--

FCCID:2BX4A-S27

DNT2608126272R12932-P01Page: 1 of 5 PHOTOGRAPHSOFEUT FCCID:2BX4A-S27 InternalPhotos(Leftearphone) InternalPhotos(Leftearphone) DNT2608126272R12932-P01Page: 2 of 5 InternalPhotos(Leftearphone) InternalPhotos(Leftearphone) DNT2608126272R12932-P01Page: 3 of 5 InternalPhotos(Rightearphone) InternalPhotos(Rightearphone) DNT2608126272R12932-P01Page: 4 of 5 InternalPhotos(Rightearphone) InternalPhotos(Rightearphone) DNT2608126272R12932-P01Page: 5 of 5 InternalPhotos InternalPhotos --END--

GuangdongDNTestingCo.,Ltd. Add:No.1,WestFourthStreet,XingfaSouthRoad,WushaCommunity,Chang'anTown,DongguanCity,GuangdongP.R.China Tel:+86-769-88087383E-mail:[email protected] RFExposureEvaluationReport ApplicationNo.: DNT2608126272R12932-16715 Applicant: AomeikaTechnology(Shenzhen)Co.,Ltd. AddressofApplicant: Room.207-209,NO.487GuanlanAvenue,XinlanCommunity, GuanlanSubdistrict,LonghuaDistrict,ShenzhenCity EUTDescription: OpenBluetoothheadset ModelNo.: S27 AdditionalModel(s): S25 FCCID: 2BX4A-S27 Powersupply: InputDC5V;DC3.7Vfromrechargeablelithium-ionbattery TradeMark: Kncfoeb Standards: 47CFRPart2.1093 FCCKDB447498D04v01 DateofReceipt: 2026/08/12 DateofTest: 2026/08/13to2026/08/28 DateofIssue: 2026/09/02 TestResult:PASS PreparedBy:(TestingEngineer) ReviewedBy:(ProjectEngineer) ApprovedBy:(Manager) Note:Ifthereisanyobjectiontotheresultsinthisreport,pleasesubmitawritteninquirytothecompanywithin15daysfromthedateof receivingthereport.Thetestreportiseffectiveonlywithbothsignatureandspecializedstamp,andisissuedbythecompanyinaccordance withtherequirementsofthe"ConditionsofIssuanceofTestReports"printedintheattachedpage.Unlessotherwisestated,theresults presentedinthisreportonlyapplytothesamplestestedthistime.Partialreproductionofthisreportisnotallowedunlessapprovedbythe companyinwriting. ReportNo.:DNT2608126272R12932-16715Date：September2,2026Page： 2 / 8 GuangdongDNTestingCo.,Ltd. Add:No.1,WestFourthStreet,XingfaSouthRoad,WushaCommunity,Chang'anTown,DongguanCity,GuangdongP.R.China Tel:+86-769-88087383E-mail:[email protected] ReportReviseRecord ReportVersionReviseTimeIssuedDateValidVersionNotes V1.0/September2,2026ValidOriginalReport ReportNo.:DNT2608126272R12932-16715Date：September2,2026Page： 3 / 8 GuangdongDNTestingCo.,Ltd. Add:No.1,WestFourthStreet,XingfaSouthRoad,WushaCommunity,Chang'anTown,DongguanCity,GuangdongP.R.China Tel:+86-769-88087383E-mail:[email protected] Contents RFEXPOSUREEVALUATIONREPORT.............................................................................................................................................1 1GENERALINFORMATION..................................................................................................................................................................4 1.1TESTLOCATION.................................................................................................................................................................................4 1.2GENERALDESCRIPTIONOFEUT.....................................................................................................................................................4 1.3TESTFACILITY...................................................................................................................................................................................5 1.4MEASUREMENTUNCERTAINTY(95%CONFIDENCELEVELS,K=2)....................................................................................................5 2RFEXPOSUREEVALUATION............................................................................................................................................................6 2.1RFEXPOSURECOMPLIANCEREQUIREMENT..................................................................................................................................6 ReportNo.:DNT2608126272R12932-16715Date：September2,2026Page： 4 / 8 GuangdongDNTestingCo.,Ltd. Add:No.1,WestFourthStreet,XingfaSouthRoad,WushaCommunity,Chang'anTown,DongguanCity,GuangdongP.R.China Tel:+86-769-88087383E-mail:[email protected] 1GeneralInformation 1.1TestLocation Company:GuangdongDNTestingCo.,Ltd Address: No.1,WestFourthStreet,XingfaSouthRoad,WushaCommunity,Chang'an Town,DongguanCity,GuangdongP.R.China Testengineer:GaliLin 1.2GeneralDescriptionofEUT Manufacturer: ShenzhenTopuChuangyiIndustriaICo.,LTD AddressofManufacturer: No.601,BuildingC1,WeihuaDalndustrialPark,LiRongRoad5,Xinzhi Community,DalangSubdistrictLonghua,District,CityShenzhen EUTDescription: OpenBluetoothheadset ModelNo.: S27 AdditionalModel(s): S25 PowerSupply: InputDC5V;DC3.7Vfromrechargeablelithium-ionbattery TradeMark: Kncfoeb HardwareVersion: V1.0 SoftwareVersion: V1.0 Serialnumber:PR2608126272R12932 ChipType:AB5756C SampleType:PortableDevice,Module,MobileDevice AntennaType: External,Integrated AntennaPorts: Ant1,Ant2,Ant3 AntennaGain: Providedbyapplicant -0.42dBi Note: *Sincetheabovedataand/orinformationisprovidedbytheclientrelevantresultsorconclusionsofthis reportareonlymadeforthesedataand/orinformation,DNTisnotresponsiblefortheauthenticity,integrity andresultsofthedataandinformationand/orthevalidityoftheconclusion. *Allmodelsarejustnameandcolordifferences,motherboard,PCBcircuitboard,chip,electronic componentsisallthesame. ReportNo.:DNT2608126272R12932-16715Date：September2,2026Page： 5 / 8 GuangdongDNTestingCo.,Ltd. Add:No.1,WestFourthStreet,XingfaSouthRoad,WushaCommunity,Chang'anTown,DongguanCity,GuangdongP.R.China Tel:+86-769-88087383E-mail:[email protected] 1.3TestFacility Thetestfacilityisrecognized,certified,oraccreditedbythefollowingorganizations: LabA: •FCC,USA DesignationNumber:CN1348 •A2LA(CertificateNo.7050.01) GUANGDONGDNTESTINGCO.,LTD.isaccreditedbytheAmericanAssociationforLaboratory Accreditation(A2LA).CertificateNo.7050.01. •Innovation,ScienceandEconomicDevelopmentCanada GUANGDONGDNTESTINGCO.,LTD.EMCLaboratoryhasbeenrecognizedbyISEDasanaccreditedtesting laboratory.CABidentifierisCN0149. IC#:30755. . 1.4MeasurementUncertainty(95%confidencelevels,k=2) No.ItemMeasurementUncertainty 1 20dBEmissionBandwidth±0.0196% 2 CarrierFrequencySeparation±1.9% 3 NumberofHoppingChannel±1.9% 4 TimeofOccupancy±0.028% 5 MaxPeakConductedOutputPower±0.743dB 6 Band-edgeSpuriousEmission±1.328dB 7 ConductedRFSpuriousEmission 9KHz-1GHz:±0.746dB 1GHz-26GHz:±1.328dB No.ItemMeasurementUncertainty 1ConductionEmission±3.0dB(150kHzto30MHz) 2RadiatedEmission ±4.8dB(Below1GHz) ±4.8dB(1GHzto6GHz) ±4.5dB(6GHzto18GHz) ±5.02dB(Above18GHz) ReportNo.:DNT260…

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拓普 拓普 S27 A1 板载 2025.12.04 深圳市合拓科技有 Thanks for your comment! 令深圳市合拓科技有限公司 ．深圳深圳市宝安区西乡恒丰工业城C6栋1202E ♦ Rf 胡雪文 manufacturer:

Guangdong DN Testing Co., Ltd. Add: No. 1, West Fourth Street, Xingfa South Road, Wusha Community, Chang 'an Town, Dongguan City, Guangdong P.R.China Tel:+86-769-88087383E-mail: [email protected] FCC Test Report Application No.: DNT2608126272R12932-16717 Applicant: Aomeika Technology (Shenzhen) Co., Ltd. Address of Applicant: Room.207-209,NO.487 Guanlan Avenue,Xinlan Community, Guanlan Subdistrict,Longhua District, Shenzhen City EUT Description: Open Bluetooth headset Model No.: S27 Additional Model(s): S25 FCC ID: 2BX4A-S27 Power Supply: Input DC 5V; DC 3.7V from rechargeable lithium-ion battery Trade Mark: Kncfoeb Standards: 47 CFR Part 2, Subpart J 47 CFR Part 15, Subpart C ANSI C63.10: 2020 Date of Receipt: 2026/08/12 Date of Test: 2026/08/13 to 2026/08/28 Date of Issue: 2026/09/02 Test Result:PASS Prepared By:(Testing Engineer) Reviewed By:(Project Engineer) Approved By:(Manager) Note: If there is any objection to the results in this report, please submit a written inquiry to the company within 15 days from the date of receiving the report. The test report is effective only with both signature and specialized stamp, and is issued by the company in accordance with the requirements of the "Conditions of Issuance of Test Reports" printed in the attached page. Unless otherwise stated, the results presented in this report only apply to the samples tested this time. Partial reproduction of this report is not allowed unless approved by the company in writing. Report No.: DNT2608126272R12932-16717Date：September 2, 2026Page： 2 / 51 Guangdong DN Testing Co., Ltd. Add: No. 1, West Fourth Street, Xingfa South Road, Wusha Community, Chang 'an Town, Dongguan City, Guangdong P.R.China Tel:+86-769-88087383E-mail: [email protected] Report Revise Record Report VersionRevise TimeIssued DateValid VersionNotes V1.0/September 2, 2026ValidOriginal Report Report No.: DNT2608126272R12932-16717Date：September 2, 2026Page： 3 / 51 Guangdong DN Testing Co., Ltd. Add: No. 1, West Fourth Street, Xingfa South Road, Wusha Community, Chang 'an Town, Dongguan City, Guangdong P.R.China Tel:+86-769-88087383E-mail: [email protected] 1 Test Summary Test ItemTest RequirementTest MethodTest ResultResult Antenna Requirement15.203/247(b/c)--Clause 3.1PASS 20dB Emission Bandwidth15.247 (a)(1)ANSI C63.10: 2020Clause 3.2PASS Conducted Peak Output Power 15.247 (b)(1)ANSI C63.10: 2020Clause 3.3PASS Carrier Frequencies Separation 15.247 (a)(1)ANSI C63.10: 2020Clause 3.4PASS Dwell Time15.247 (a)(1)ANSI C63.10: 2020Clause 3.5PASS Hopping Channel Number15.247 (a)(1)ANSI C63.10: 2020Clause 3.6PASS Band-edge for RF Conducted Emissions 15.247(d)ANSI C63.10: 2020Clause 3.7PASS RF Conducted Spurious Emissions 15.247(d)ANSI C63.10: 2020Clause 3.8PASS Radiated Spurious emissions 15.247(d); 15.205/15.209 ANSI C63.10: 2020Clause 3.9PASS Restricted bands around fundamental frequency (Radiated Emission) 15.247(d); 15.205/15.209 ANSI C63.10: 2020Clause 3.10PASS AC Power Line Conducted Emission 15.207ANSI C63.10: 2020Clause 3.11PASS Note: 1. “N/A” denotes test is not applicable in this test report. Report No.: DNT2608126272R12932-16717Date：September 2, 2026Page： 4 / 51 Guangdong DN Testing Co., Ltd. Add: No. 1, West Fourth Street, Xingfa South Road, Wusha Community, Chang 'an Town, Dongguan City, Guangdong P.R.China Tel:+86-769-88087383E-mail: [email protected] Contents 1 Test Summary..................................................................................................................................................................3 2 General Information..........................................................................................................................................................5 2.1 Test Location..........................................................................................................................................................5 2.2 General Description of EUT...................................................................................................................................5 2.3 Test Environment...................................................................................................................................................6 2.4 Channel List........................................................................................................................................................... 6 2.5 Power Setting of Test Software............................................................................................................................. 7 2.6 Assistant equipment used for test..........................................................................................................................7 2.7 Description of Support Units.................................................................................................................................. 7 2.8 Test Facility............................................................................................................................................................7 2.9 Equipment List....................................................................................................................................................... 8 2.10 Measurement Uncertainty (95% confidence levels, k=2).................................................................................. 10 3 Test results and Measurement Data..............................................................................................................................11 3.1 Antenna Requirement..........................................................................................................................................11 3.2 20dB Emission Bandwidth................................................................................................................................... 12 3.3 Conducted Output Power................................................................................…

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Report No.: DNT2608126272R12932-16717Date：September 2, 2026Page： 49 / 51 Guangdong DN Testing Co., Ltd. Add: No. 1, West Fourth Street, Xingfa South Road, Wusha Community, Chang 'an Town, Dongguan City, Guangdong P.R.China Tel:+86-769-88087383E-mail: [email protected] Test Graphs Out Of Band Emission GFSK_DH5_Channel 0 Out Of Band Emission π/4DQPSK_2-DH5_Channel 0 30.0 MHz - 25000.0 MHz GFSK_DH5_Channel 0 30.0 MHz - 25000.0 MHz π/4DQPSK_2-DH5_Channel 0 Out Of Band Emission GFSK_DH5_Channel 39 Out Of Band Emission π/4DQPSK_2-DH5_Channel 39 Report No.: DNT2608126272R12932-16717Date：September 2, 2026Page： 50 / 51 Guangdong DN Testing Co., Ltd. Add: No. 1, West Fourth Street, Xingfa South Road, Wusha Community, Chang 'an Town, Dongguan City, Guangdong P.R.China Tel:+86-769-88087383E-mail: [email protected] 30.0 MHz - 25000.0 MHz GFSK_DH5_Channel 39 30.0 MHz - 25000.0 MHz π/4DQPSK_2-DH5_Channel 39 Out Of Band Emission GFSK_DH5_Channel 78 Out Of Band Emission π/4DQPSK_2-DH5_Channel 78 30.0 MHz - 25000.0 MHz GFSK_DH5_Channel 78 30.0 MHz - 25000.0 MHz π/4DQPSK_2-DH5_Channel 78 Out Of Band Emission 8DPSK_3-DH5_Channel 0 30.0 MHz - 25000.0 MHz 8DPSK_3-DH5_Channel 0 Report No.: DNT2608126272R12932-16717Date：September 2, 2026Page： 51 / 51 Guangdong DN Testing Co., Ltd. Add: No. 1, West Fourth Street, Xingfa South Road, Wusha Community, Chang 'an Town, Dongguan City, Guangdong P.R.China Tel:+86-769-88087383E-mail: [email protected] Out Of Band Emission 8DPSK_3-DH5_Channel 39 30.0 MHz - 25000.0 MHz 8DPSK_3-DH5_Channel 39 Out Of Band Emission 8DPSK_3-DH5_Channel 78 30.0 MHz - 25000.0 MHz 8DPSK_3-DH5_Channel 78 The End Report

DNT2608126272R12932-P01Page: 1 of 3 PHOTOGRAPHSOFEUT FCCID:2BX4A-S27 AntennaTerminalTestView DNT2608126272R12932-P01Page: 2 of 3 ConductedEmissionTestView RadiatedEmissionTestView|(Below1G) DNT2608126272R12932-P01Page: 3 of 3 RadiatedEmissionTestView|(Above1G) RadiatedEmissionTestView|(Above1G) --END--