2BHMQ-CT3MINIOpen Ear Headphones

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. Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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 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. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction

ShenzhenXianingTechnologyCo.,Ltd 2.911(d)(5)(i)EquipmentTypeAttestationv1.2 Section2.911(d)(5)(i)Certification–EquipmentType Companyname:ShenzhenXianingTechnologyCo.,Ltd Address:301,Building13,SanXiang,SanQu,HualongxinVillage,BujiStreet, LonggangDistrict,ShenzhenChina ProductName:OpenEarHeadphones FCCID:2BHMQ-CT3MINI Model(s):CT3mini 2.911(d)(5)(i)EquipmentType We,[ShenzhenXianingTechnologyCo.,Ltd](“theapplicant”)certifythattheequipmentforwhich authorizationissoughtthroughcertificationisnot:  Prohibitedfromreceivinganequipmentauthorizationpursuantto§2.903;oftheFCCrules.  Identifiedasanequipmenttypeinthe“CoveredList” NOTE1 Yourssincerely, Name:ComyxiaoDate:2024.7.17 TitleandCompanyname:Manager/ShenzhenXianingTechnologyCo.,Ltd NOTE1 “CoveredList”;istheListofEquipmentandServicesCoveredBySection2ofTheSecureNetworksAct,availableat https://www.fcc.gov/supplychain/coveredlist References; 1)986446D01CoveredEquipmentv01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2)FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

ShenzhenXianingTechnologyCo.,Ltd 2.911(d)(5)(ii)ApplicantAttestationv1.3 Section2.911(d)(5)(ii)Certification–Applicant(CoveredList) Companyname:ShenzhenXianingTechnologyCo.,Ltd Address:301,Building13,SanXiang,SanQu,HualongxinVillage,BujiStreet, LonggangDistrict,ShenzhenChina ProductName:OpenEarHeadphones FCCID:2BHMQ-CT3MINI Model(s):CT3mini 2.911(d)(5)(ii)Applicantfiling We,[ShenzhenXianingTechnologyCo.,Ltd](“theapplicant”)certifythat,asofthedateofthefiling oftheapplication,theapplicantisnotidentified NOTE1 onthe“CoveredList” NOTE2 ,established pursuantto§1.50002ofthischapter,asanentityproducingcoveredcommunicationsequipment. Yourssincerely, Name:ComyxiaoDate:2024.7.17 TitleandCompanyname:Manager/ShenzhenXianingTechnologyCo.,Ltd NOTE1 Deleteoptionnotapplicabletothisapplication. NOTE2 “CoveredList”;istheListofEquipmentandServicesCoveredBySection2ofTheSecureNetworksAct,availableat https://www.fcc.gov/supplychain/coveredlist References; 1)986446D01CoveredEquipmentv01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2)FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Shenzhen Xianing Technology Co., Ltd 2.911 (d)(7)USA Agent v1.5 Section 2.911(d)(7) USA Agent for Service of Process Company name:Shenzhen Xianing Technology Co., Ltd Address:301, Building 13, San Xiang, San Qu, Hualongxin Village, Buji Street, Longgang District, Shenzhen China Product Name:Open Ear Headphones FCCID:2BHMQ-CT3MINI Model(s):CT3 mini 2.911(d)(7) USA Designated Agent for Service of Process We, [Shenzhen Xianing Technology Co., Ltd] (“the applicant”) designate [Stone Trading Limited] NOTE1 for the purpose of accepting service of process on behalf of the applicant. Applicant consent: We acknowledge our consent to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address of the designated agent and acknowledge our acceptance of our obligation to maintain an agent for service of process in the United States for no less than one year after either we the grantee have permanently terminated all marketing and importation of the applicable equipment within the U.S., or at the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. Agent obligation: We acknowledge our obligation to accept service of process in the United States for matters related to the applicable equipment at our physical U.S. address and email address for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or at the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. USA Agent Company name: Stone Trading Limited USA Address: 6547 N Academy Blvd #2266, Colorado Springs, CO 80918, United States FRN Number: 0033401936 Contact Name: Dongmei Fang Telephone No: +12134573118 Email: [email protected] Applicant Company name: Shenzhen Xianing Technology Co., Ltd Address:301, Building 13, San Xiang, San Qu, Hualongxin Village, Buji Street, Longgang District, Shenzhen China Grantee FRN Number：0035694686 FCC Grantee Code:2BHMQ Contact Name:Comy xiao Telephone No:18620378283 Email:[email protected] Signature: Title: Manager Signature: Title:Manager Date: 2024.7.17 Date: 2024.7.17 Shenzhen Xianing Technology Co., Ltd 2.911 (d)(7)USA Agent v1.5 NOTE 1: An applicant located in the United States may designate itself as the agent for service of process. Reference; Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the

ShenzhenXianingTechnologyCo.,Ltd AgentAuthorization Company:ShenzhenXianingTechnologyCo.,Ltd Address:301,Building13,SanXiang,SanQu,HualongxinVillage,BujiStreet, LonggangDistrict,ShenzhenChina ProductName:OpenEarHeadphones ModelNumber(s):CT3mini ProductDescription:OpenEarHeadphones WeauthorizeMiCOMLabsInc.,575BoulderCourt,Pleasanton,California94566,USA, toactonourbehalfonallmattersconcerningthecertificationofabovenamed equipment. WedeclarethatMiCOMLabsInc.isallowedtoforwardallinformationrelatedtothe approvalandcertificationofequipmenttotheregulatoryagenciesasrequiredandto discussanyissuesconcerningtheapprovalapplication.Anyandallactscarriedoutby MiCOMLabsonourbehalfshallhavethesameeffectasactsofourown. Signature:Date:2024.7.17 Name:Comyxiao Title:Manager Company:ShenzhenXianingTechnologyCo.,Ltd

ShenzhenXianingTechnologyCo.,Ltd OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:2024.7.17 Subject;RequestforConfidentiality FCCID:2BHMQ-CT3MINI ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthesedocuments mightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantageinthemarket. SchematicDiagram BlockDiagram PartsList OperationalDescription Tune-upProcedure Inadditionaltoabovementioneddocuments,inordertocomplywiththemarketingregulations inTitle47CFR§2.803andtheimportationrulesinTitle47CFR§2.1204,whileensuringthat businesssensitiveinformationremainsconfidentialuntiltheactualmarketingofnewly authorizeddevices,werequestShortTermConfidentialityofthefollowingattachment(s); ExternalPhotos TestSetupPhotos InternalPhotos UserManual For45days,pursuanttoPublicNoticeDA04-1705. OR For180dayspursuanttoKDB726920D01. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondenceduringthecertificationreviewprocesscannotbegrantedasconfidential documentsandthisinformationwillbeavailableforpublicreviewoncethegrantofequipment authorizationisissued. Sincerely, Signature: Name:Comyxiao Title:Manager

EUT PHOTO(External Photos)

Label and label location FCC ID LABEL: High:0.5cm Wide:1cm Label Location: Open Ear Headphones FCC ID:2BHM Q‐CT3MINI

EUT PHOTO(Internal Photos) ※※※※※※※※※※ END OF REPORT BT ANT

FCC ID:2BHMQ-CT3MINI RF Exposure Evaluation According to KDB 447498 D01 General RF Exposure Guidance v06 and part 2.1093, Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s), listed below, is (are) satisfied. For 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(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 f (GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation The result is rounded to one decimal place for comparison Here, For BR/EDR Mode Frequency (MHz) Max Power (dBm) Max Power (mW) Min. Distance (mm) Calc. thresholds limit GFSK 2441 6.980 4.99 5 1.55888 3.0 π/4-DQPSK 2441 7.408 5.51 5 1.72034 3.0 8-DPSK 2441 7.980 6.28 5 1.96252 3.0 Conclusion: 1. [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] * [√f(GHz)] < 3.0. 2. SAR Test Exclusion Thresholds is 3.0 for separation distance 5mm. Therefore, SAR test is not required.

2.4GHz1608ChipAntenna: RANT1608F245C01/1608F245C04/1608F245C05 １ Application: WLAN,802.11b/g,Bluetooth,WLAN,etc... Features SMD,highreliability,ultraImpact,Omni-directional... PartnumberInformation RANT1608F245C01/04 (A)(B)(C)(D)(E)(F) ElectricalSpecification DimensionandTerminalConfiguration No.TerminalName 1Feeding/GNG 2GND/Feeding (A)ProductTypeChipAntenna (B)SizeCode 1.6x0.8mm( ± 0.1mm) (C)MaterialHighKmaterial (D)Frequency2.4~2.5GHz (E)FeedingmodePIFA&SingleFeeding (F)AntennatypeType=01/04/05 WorkingFrequencyRange2400~2500MHz Bandwidth120MHz(Min.) PeakGain2.7dBi(Typ.) Impedance50Ohm Returnloss10dB(Min) PolarizationLinear AzimuthBeamwidthOmni-directional OperationTemperature( °C )-40~85 °C ResistancetoSolderingHeats 10sec.(@280 °C ) TerminationNi/Au(Leadless) Dimension(mm) L 1.60±0.10 W 0.80 ± 0.10 T 0.80 ± 0.10 咏成國際科技有限公司電話 :13530576606 RAINInternationalTechnologyCo.,Ltd.TEL:13530576606 2.4GHz1608ChipAntenna: RANT1608F245C01/1608F245C04/1608F245C05 ２ 1 EvaluationBoardReference 长条板Layout建议参考如下： Toplayer: Bottomlayer: 2.4GHz1608ChipAntenna: RANT1608F245C01/1608F245C04/1608F245C05 ３ 异形Layout建议参考如下： Toplayer: Toplayer: 2.4GHz1608ChipAntenna: RANT1608F245C01/1608F245C04/1608F245C05 ４ ElectricalCharacteristics ReturnLoss&Radiation ELECTRICALCHARACTERISTICSS11 RadiationPattern 2.4GHz1608ChipAntenna: RANT1608F245C01/1608F245C04/1608F245C05 ５ ElectricalCharacteristics 2.4GHz1608ChipAntenna: RANT1608F245C01/1608F245C04/1608F245C05 ６ TapingSpecifications ReelandTapingSpecification ReelSpecification TYPESIZEABCD 16087”4K/Reel 4.0±0.5 4.0±213.5±0.5178±2 TappingSpecification PackagingTypeABWEFGHTψDP PaperType1608 1.90±0.203.50±0.208.0±0.201.75±0.103.5±0.054.0±0.102.0±0.050.75±0.10 1.50±0.10 4.0±0.1 2.4GHz1608ChipAntenna: RANT1608F245C01/1608F245C04/1608F245C05 ７ ReliabilityTable TestItemProcedure Requirements CeramicType Remark (Reference) Electrical Characterization Fulfilltheelectrical specification UserSpec. Thermal Shock 1.Preconditioning: 50±10°C/1hr,thenkeepfor24±1hrsatroomtemp. 2.Initialmeasure:Spec:referInitialspec. 3.Rapidchangeoftemperaturetest: -30°Cto+85°C;100cycles; 15minutesatLowercategorytemperature; 15minutesatUppercategorytemperature. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 107 Temperature Cycling 1.Initialmeasure:Spec:referInitialspec. 2.100Cycles(-30°Cto+85°C),SoakMode=1(2Cycle/hours). 3.Measurementat24±2Hoursaftertestcondition. NoVisibleDamage. Fulfilltheelectrical specification. JESD22 JA104 HighTemperature Exposure 1.Initialmeasure:Spec:referInitialspec. 2.Unpowered;500hours@T=+85°C. 3.Measurementat24±2hoursaftertest. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 108 LowTemperature Storage 1.Initialmeasure:Spec:referInitialspec. 2.Unpowered:500hours@T=-30°C. 3.Measurementat24±2hoursaftertest. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 108 Solderability (SMDBottomSide) Dippingmethod: a.Temperature:235±5°C b.Dippingtime:3±0.5s Thesoldershouldcover over95%ofthecritical areaofbottomside. IEC60384-21/22 4.10 SolderingHeat Resistance (RSH) Preheatingtemperature:150±10°C. Preheatingtime:1~2min. Soldertemperature:260±5°C. Dippingtime:5±0.5s NoVisibleDamage.IEC60384-21/22 4.10 Vibration5g'sfor20min.,12cycleseachof3orientations Note:Use8"X5"PCB.031"thick7securepointson,onelong sideand2securepointsatcornersofoppositesides.Parts mountedwithin2"fromanysecurepoint.Testfrom10-2000 Hz. NoVisibleDamage.MIL-STD-202 Method204 Mechanical Shock Threeshocksineachdirectionshallbeappliedalongthethree mutuallyperpendicularaxesofthetestspecimen(18shocks) Peakvalue:1,500g’s Duration:0.5ms Velocitychange:15.4ft/s Waveform:Half-sine NoVisibleDamage.MIL-STD-202 Method213 Humidity Bias 1.Humidity:85%R.H.,Temperature:85±2°C. 2.Time:500±24hours. 3.Measurementat24±2hrsaftertestcondition. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 Method106 2.4GHz3216ChipAntenna: RANT1608F245C01/RANT1608F245C04/1608F245C05 _ ８ Board Flex (SMD) 1.Mountingmethod: IR-Reflow.PCBSize(L:100×W:40×T:1.6mm) 2.Applytheloadindirectionofthearrowuntilbendingreaches 2mm. NoVisibleDamage.AEC-Q200 005 AdhesionForceof1.8Kgfor60seconds.NoVisibleDamage Magnificationof20Xor greatermaybeemployed forinspectionofthe mechanicalintegrityofthe devicebodyterminalsand body/terminaljunction. AEC-Q200 006 Physical Dimension Anyapplicablemethodusingx10magnification,micrometers, calipers,gauges,contourprojectors,orothermeasuring equipment,capableofdeterminingtheactualspecimen dimensions. Inaccordancewith specification. JESD22 JB100 RevisionHistory RevisionDateContent 12019/03/01NewDatasheet 22020/02/22Add2Dradiationcharacteristic

Project No.: ZKT-2407118070E Page 1 of 66 FCC TEST REPORT FCC ID:2BHMQ-CT3MINI Report Number. ................................ : ZKT-2407118070E Date of Test ........................................ Jul. 11, 2024 to Jul. 16, 2024 Date of issue .................................... : Jul. 16, 2024 Total number of pages ....................... 66 Test Result ...................................... : PASS Testing Laboratory. ........................ : Shenzhen ZKT Technology Co., Ltd. Address .......................................... : 1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China Applicant's name .......................... : Shenzhen Xianing Technology Co., Ltd Address .......................................... : 301, Building 13, San Xiang, San Qu, Hualongxin Village, Buji Street, Longgang District, Shenzhen Manufacturer's name ................... : Shenzhen Xianing Technology Co., Ltd Address .......................................... : 301, Building 13, San Xiang, San Qu, Hualongxin Village, Buji Street, Longgang District, Shenzhen Test specification: Standard ........................................... : FCC CFR Title 47 Part 15 Subpart C Section 15.247 ANSI C63.10:2013 Test procedure ................................. : / Non-standard test method .............. : N/A Test Report Form No. ..................... : / Test Report Form(s) Originator ..... : ZKT Testing Master TRF .................................... : Dated: 2020-01-06 This device described above has been tested by ZKT, and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of ZKT, this document may be altered or revised by ZKT, personal only, and shall be noted in the revision of the document. Product name ................................. : Open Ear Headphones Trademark ...................................... : Blitzrock Model/Type reference ...................... : CT3 mini Ratings ............................................. : Input: 5V 0.5A Battery capacity: DC 3.7V, 55mAh Project No.: ZKT-2407118070E Page 2 of 66 Testing procedure and testing location: Testing Laboratory ................................... : Shenzhen ZKT Technology Co., Ltd. Address ...................................................... :1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China Jim Liu Tested by (name + signature) .................... : Jackson Fang Reviewer (name + signature) ..................... : Lake Xie Approved (name + signature) .................... : Project No.: ZKT-2407118070E Page 3 of 66 Table of Contents Page 1. Version ................................................................................................................................................ 5 2. TEST SUMMARY ................................................................................................................................. 6 2.1 TEST FACILITY .......................................................................................................................... 7 2.2 MEASUREMENT UNCERTAINTY ............................................................................................. 7 3. GENERAL INFORMATION .................................................................................................................. 8 3.1 GENERAL DESCRIPTION OF EUT ........................................................................................... 8 3.2 Test Setup Configuration .......................................................................................................... 10 3.3 Support Equipment ................................................................................................................... 10 3.4 Test Mode ................................................................................................................................ 10 4. EMC EMISSION TEST ....................................................................................................................... 13 4.1 Conducted emissions ............................................................................................................... 13 4.1.1 POWER LINE CONDUCTED EMISSION Limits ................................................................... 13 4.1.2 TEST PROCEDURE ............................................................................................................. 13 4.1.3 DEVIATION FROM TEST STANDARD ................................................................................. 13 4.1.4 TEST SETUP ........................................................................................................................ 14 4.1.5 EUT OPERATING CONDITIONS .......................................................................................... 14 4.1.6 Test Result ............................................................................................................................ 15 4.2 Radiated emissions .................................................................................................................. 17 4.2.1 Radiated Emission Limits ...................................................................................................... 17 4.2.2 TEST PROCEDURE ............................................................................................................. 17 4.2.3 DEVIATION FROM TEST STANDARD ................................................................................. 18 4.2.4 TEST SETUP ........................................................................................................................ 18 4.2.5 EUT OPERATING CONDITIONS .......................................................................................... 19 4.2.6 TEST RESULTS ..…

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EUT TEST PHOTO