2BCSV-SANGSTRELSport Audio Glasses

FCC Caution. (1)§ 15.19 Labelling requirements. 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. § 15.21 Changes or modification warning Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. § 15.105 Information to the user. 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. RF warning for Portable device: The device has been evaluated to meet general RF exposure requir ement. The device can be used in portable exposure condition without restriction.

1/1 USAgentforServiceofProcessLETTEROFATTESTATION TO: OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USAgentforServiceofProcess: CompanyName:SUNBEYONDCONSULTINGLTD FRN:0033588823 ContactName:MrsYaniesLee Address:90CANALSTREET,4THFLOOROFFICENO.448,BOSTON,MA2114,UnitedStates Telephone:(309)822-2400 Email:[email protected] Applicant: Companyname:ShenzhenHebaiOpticalAcousticsCo.,Ltd ProductDescription:SportAudioGlasses Granteecode:2BCSV FCCID:2BCSV-SANGSTREL FRN：0034212423 ContactName:WeiZhihua Address:No.12,TongfuyuIndustrialZone,XinheCommunity,FuhaiStreet,BaoanDistrict, ShenzhenCity TelephoneNo:18969125318 Email:[email protected] [ShenzhenHebaiOpticalAcousticsCo.,Ltd]certifiesthat,asofthedateofthis filingoftheapplicationwiththeTCB,[SUNBEYONDCONSULTINGLTD]isour designatedUSagentforserviceofprocessfortheabovereferencedFCCID. [ShenzhenHebaiOpticalAcousticsCo.,Ltd]acceptstomaintainanagentfor nolessthanoneyearafterthegranteehasterminatedallmarketingand importationortheconclusionofanycommissionrelatedproceedinginvolving equipment.[SUNBEYONDCONSULTINGLTD]accepts,asofthedateofthe filingoftheapplication,theobligationofthedesignatedUSagentforserviceof processfortheabovereferenceFCCID. TheUSAgentforServiceofProcessisawareofandagreestocomplywiththerequirements outlinedintheFCCEquipmentAuthorizationProgram,ReportandOrderFCC22-84,andclause §2.911. TheApplicantisawareofandagreestocomplywiththerequirementsoutlinedintheFCC EquipmentAuthorizationProgram,ReportandOrderFCC22-84,andclause§2.911. Date:December28,2023 Applicant’sName:WeiZhihuaUSAgent’sName:YaniesLee Title:managerTitle:ComplianceManager SignatureSignature

C5266091_X24_Ed.2 1/1 “AttestationStatements” TO: OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 TheCommissionadoptedrulesthatprohibitequipmentauthorizationfor“covered” telecommunicationsequipmentandvideosurveillanceequipmentproducedbyentitiesidentified ontheCommission’sCoveredList 1 ,whichisperiodicallyupdated.SeetheCoveredListformore details.ThisAttestationStatementistoconfirmthatwefollowtheSection2.911(d)(5)(i)-(ii) Applicant Companyname:ShenzhenHebaiOpticalAcousticsCo.,Ltd ProductDescription:SportAudioGlasses Granteecode:2BCSV FCCID:2BCSV-SANGSTREL FRN：0034212423 ContactName:WeiZhihua Address:No.12,TongfuyuIndustrialZone,XinheCommunity,FuhaiStreet,BaoanDistrict, ShenzhenCity TelephoneNo:18969125318 Email:[email protected] i.[ShenzhenHebaiOpticalAcousticsCo.,Ltd](“theapplicant”)certifiesthat theequipmentforwhichauthorizationissoughtisnot“covered”equipment prohibitedfromreceivinganequipmentauthorizationpursuanttosection 2.903oftheFCCrules.Theapplicantmustsignthiscertification. ii.[ShenzhenHebaiOpticalAcousticsCo.,Ltd](“theapplicant”)certifiesthat, asofthedateofthefilingoftheapplication,theapplicant[isnot](asa specificallynamedentityoranyofitssubsidiariesoraffiliates)identifiedon theCoveredListasanentityproducing“covered”equipment.Theapplicant mustsignthiscertification. [ShenzhenHebaiOpticalAcousticsCo.,Ltd](“theapplicant”)certifiesthat,asof thedateofthefilingoftheapplication,theapplicant[isnot]identifiedonthe CoveredListasanentityproducing“covered”equipment. Date:2023-12-28 Applicant’sName:ShenzhenHebaiOpticalAcousticsCo.,Ltd Title:Manager Signature 1 TheCommission’sCoveredListispublishedbythePublicSafetyandHomelandSecurityBureauandpostedonthe Commission’swebsite.ThisCoveredList,whichisperiodicallyupdated,identifiesparticularequipment,producedby particularentities,thatconstitutes“covered”equipment.https://www.fcc.gov/supplychain/coveredlist

ShenzhenHebaiOpticalAcousticsCo.,Ltd ProductSimilarityDeclaration Productname:SportAudioGlasses Modelname:SANGSTRELiszt,VocalSkullSports FCCID:2BCSV-SANGSTREL We( ShenzhenHebaiOpticalAcousticsCo.,Ltd )hereby statethatallthemodelsareelectricalidenticalincludingthesame softwareparameterandhardwaredesign(i.e.,circuitdesign,PCB Layout,RFmodule/circuit,antennatype(s)andantennalocation, componentsonPCB,etc.,),samemechanicalstructureanddesign (includingproductenclosure,materials,etc.,),theonlydifferenceisthe modelname(ifanydifference). Demonstratethedetail(descriptionsandpictures)astothedifference listabove. Theproductonlyhasdifferentmodelsonthelabel,andtherestarethe same. Signature: Name:WeiZhihua Title:Manager Place,dateShenzhen,December29,2023

C5266091_X8_Ed.1 1/1 LetterofAuthorization <ShenzhenHebaiOpticalAcousticsCo.,Ltd> Company:ShenzhenHebaiOpticalAcousticsCo.,Ltd Address:No.12,TongfuyuIndustrialZone,XinheCommunity,Fuhai Street,BaoanDistrict,ShenzhenCity ProductName:SportAudioGlasses ModelNumber:SANGSTRELiszt,VocalSkullSports FCCIdentifier:2BCSV-SANGSTREL WeauthorizeLGAITechnologicalCenterS.A.,RondadelaFontdelCarme,s/n, 08193Bellaterra,Spain,toactonourbehalfonallmattersconcerningthe abovenamedequipment. AnyindividualwithinLGAITechnologicalCenterS.A.isauthorizedtoactonour behalfandtakeactionontheapplication. WedeclarethatauthorizeLGAITechnologicalCenterS.A.,RondadelaFontdel Carme,s/n,08193Bellaterra,Spain,isallowedtoforwardallinformation relatedtotheapprovalprojecttotheFederalCommunicationCommissionand todiscussanyissuesconcerningtheapprovalapplication.Anyandallacts carriedoutbyLGAITechnologicalCenterS.A.onourbehalfshallhavethe sameeffectasactsofourown. Name:WeiZhihua Date:2023-12-28 Title:manager Signatureofapplicant:

C5266091_X10_Ed.2 1/1 ShenzhenHebaiOpticalAcousticsCo.,Ltd OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 Date:2023-12-28 Subject:RequestforConfidentiality FCCID:2BCSV-SANGSTREL ToWhomItMayConcern, PursuanttotheprovisionsofSections0.457and0.459ofCommission'srules (47CFR0.457,0.459),wearerequestingtheCommissiontowithholdthefollowing attachment(s)asconfidentialdocumentfrompublicdisclosure. ExhibitsLong-Term Confidentiality Short-Term Confidentiality NOTE2 IDLabel/LocationNoNo AttestationStatementNoNo ExternalPhotosNo ☐ BlockDiagram ☒☐ Schematics ☒☐ TestReportNoNo TestSetupPhotosNo ☐ User’sManual ☐ NOTE 1 ☒ InternalPhotos ☐ NOTE 1 ☒ PartsList/TuneUp ☐ RFExposureInfoNoNo OperationalDescription ☒☐ CoverLetter(s)NoNo SDRSoftware/SecurityInfo ☐ No NOTE1:Long-TermConfidentialitymaybepermittedunderspecialconditions(SeeII.LONG-TERMCONFIDENTIALITY,Section3of KDB726920,uselastinforce) NOTE2:Short-TermConfidentialitycanberequestedforamaximumof180daysfromthedateofthegrant. Abovementioneddocumentcontainsdetailedsystemandequipmentdescriptionare consideredasproprietaryinformationinoperationoftheequipment.Thepublic disclosureofabovedocumentsmightbeharmfultoourcompanyandwouldgive competitoranunfairadvantageinthemarket. Incaseofshort-termConfidentiality,theapplicantrequeststheexhibitsselected abovearewithheldfrompublicviewforaperiodof____180__daysfromthedateof theGrantofEquipmentAuthorizationandpriortomarketing. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondentduringcertificationreviewprocesscannotbegrantedasconfidential documentsandthoseinformationwillbeavailableforpublicreviewoncethegrantof equipmentauthorizationisissued. Sincerely, Signature: Name:WeiZhihua Title:Manager ☐

FCCID:2BCSV-SANGSTREL

FCCIDLABELINGANDLOCATION FCCIDLabel FCCIDLabelLocation Thelabelshownshallbepermanentlyaffixedataconspicuouslocationonthedeviceandbe readilyvisibletotheuseratthetimepurchase(Labelingrequirementsper2.925) SportAudioGlasses FCCID:2BCSV-SANGSTREL

FCCID:2BCSV-SANGSTREL CeramicAntenna

FCCID:2BCSV-SANGSTREL RFEXPOSUREEVALUATIONMETHOD AccordingtoFCC1.1310:Thecriterialistedinthefollowingtableshallbeusedto evaluatetheenvironmentimpactofhumanexposuretoradiofrequency(RF)Radiation asspecifiedin§1.1307(b) AccordingtoKDB447498D01GeneralRFExposureGuidancev06,Unlessspecificallyrequiredby thepublishedRFexposureKDBprocedures,standalone1-gheadorbodyand10-gextremitySAR evaluationforgeneralpopulationexposureconditions,bymeasurementornumericalsimulation,is notrequiredwhenthecorrespondingSARTestExclusionThresholdcondition(s),listedbelow,is(are) satisfied. EUTSpecification EUT SportAudioGlasses Frequencyband (Operating) WLAN:2.412GHz~2.462GHz WLAN:5.150GHz~5.250GHz WLAN:5.725GHz~5.850GHz OthersBT:2402-2480MHz DevicecategoryPortable(<20cmseparation) Mobile(>20cmseparation) Others ExposureclassificationOccupational/Controlledexposure(S=5mW/cm 2 ) GeneralPopulation/Uncontrolledexposure (S=1mW/cm 2 ) AntennadiversitySingleantenna Multipleantennas Txdiversity Rxdiversity Tx/Rxdiversity Max.outputpower -8.112dBm(0.00015W) Antennagain(Max) 2.66dBi EvaluationappliedMPEEvaluation SAREvaluation FCCID:2BCSV-SANGSTREL RFEXPOSUREEVALUATIONMETHOD SARTestExclusionThresholdsfor100MHz–6GHzand≤50mm ApproximateSARTestExclusionPowerThresholdsatSelectedFrequenciesandTestSeparation DistancesareillustratedinthefollowingTable. The1-gand10-gSARtestexclusionthresholdsfor100MHzto6GHzattestseparationdistances≤50 mmaredeterminedby: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]·[√f(GHz)]≤3.0for1-gSARand≤7.5for10-gextremitySAR,where f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤50mmandfor transmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtest separationdistanceis<5mm,adistanceof5mmisappliedtodetermineSARtestexclusion. FCCID:2BCSV-SANGSTREL Maximummeasuredtransmitterpower. BT Operating Mode Frequenc y Measure d Power max. power Antenna Gain Antenna Gain (linear) min.test separation distance ResultLimit (MHz)(dBm)(mW)(dBi)/(mm) GFSK 2402-8.1120.152.661.8550.04793 2440-8.8690.132.661.8550.04053 2480-9.1450.122.661.8550.03833 Remark:Thebestcasegainoftheantennais2.66dBi. 2.66dBilogarithmictermsconverttonumericresultisnearly1.85 The1-gand10-gSARtestexclusionthresholdsfor100MHzto6GHzattestseparation distances≤50mmaredeterminedby: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparation distance,mm)]·[√f(GHz)] ThetestResultislessthan3.0for1-gSARand≤7.5for10-gextremitySAR. Conclusion:NoSARisrequired.

Walsin Technology Corporation Page 1 of 8 ASC_RFANT5220110A0T_V08 Sep. 2006 CERAMIC ANTENNA 2.4 GHz ISM Band Working Frequency P/N: RFANT5220110A0T Manufacturer:Walsin Technology Corporation 13C, Fuxin Garden, Fuhua Road, Futian District, Shenz hen *Contents in this sheet are subject to change without prior notice. Walsin Technology Corporation Page 2 of 8 ASC_RFANT5220110A0T_V08 Sep. 2006 L= 2.0 ±0.2 mm T= 1.15 ±0.10 mm W = 5.2 ± 0.2 mm B = 0.40 ± 0.25 mm A = 0.40 ± 0.25 mm WTC L= 2.0 ±0.2 mm T= 1.15 ±0.10 mm W = 5.2 ± 0.2 mm B = 0.40 ± 0.25 mm A = 0.40 ± 0.25 mm WTC FEATURES … Surface Mounted Devices with a small dimension of 5.2 x 2.0 x 1.1 mm 3 meet future miniaturization trend. … Embedded and LTCC (Low Temperature Co-fired Ceramic) technology is able to future integrate with system design as well as beautifying the housing of final product. … High Stability in Temperature / Humidity Change APPLICATIONS … Bluetooth … Wireless LAN … HormRF … ISM band 2.4GHz wireless applications DESCRIPTION Walsin Technology Corporation develops a new ceramic embedded antenna specified for 2.4 GHz ISM Band application, as shown in below “CONSTRUCTION”. Both of Wireless LAN IEEE 802.11b and Bluetooth TM typically located on this unlicensed frequency band which range covers from 2.4GHz to 2.4835GHz. To fulfil the friendly usage for antenna, this antenna has been designed to a typical 150MHz bandwidth through Walsin’s advanced LTCC (Low Temperature Co-fired Ceramic) technology and superior product design via 3D EM Simulation Skill. This antenna has a rectangular ceramic body with a tiny dimension of 5.2x 2.0 x 1.1 mm 3 meet the future SMT automation and miniaturization requirements on modern portable devices. CONSTRUCTION Fig 1. Outline of 2.4GHz Antenna – RFANT5220110A0T Fig 2. Dimension W T C W T C Soldering terminal Identification mark Feeding W T C W T C Soldering terminal Identification mark Feeding Walsin Technology Corporation Page 3 of 8 ASC_RFANT5220110A0T_V08 Sep. 2006 SOLDER LAND PATTERN DESIGN Figure ELECTRICAL CHARACTERISTICS Item Specification Working Frequency Range 2.4 GHz ～ 2.5GHz Antenna Gain 2.66 dBi (max) ANT5220110A0T PolarizationLinear Azimuth Beamwidth Omni-directional Impedance50Ω Rated Power (max.) 3 Watts Maximum Input Power 5 Watts for 5 minutes Operation Temperature -40°C ~ +85°C Remark: The specification is defined based on the test board dimension as in below To 50Ω RF I/O GROUND 6.4 1.0 1.0 4.4 2.0 Ground Soldering Pad 50 ΩTransmission Line Unit : mm 1.0 To 50Ω RF I/O GROUND 6.46.4 1.0 1.0 4.4 2.0 Ground Soldering Pad 50 ΩTransmission Line Unit : mm 1.0 A ntenna model Walsin Technology Corporation Page 4 of 8 ASC_RFANT5220110A0T_V08 Sep. 2006 Antenna on Test Board ( FR4 Thickness 0.8mm) Antenna S11 on Test Board Bandwidth >150MHzBandwidth >150MHz Empty Area Empty Area 18x9 mm 50ΩFeed line GROUND 30x18 mm 1mm 3.3mm 1.5mm WTC 2.5mm 18mm Empty Area Empty Area 18x9 mm 50ΩFeed line GROUND 30x18 mm 1mm 3.3mm 1.5mm WTCWTC 2.5mm 18mm Walsin Technology Corporation Page 5 of 8 ASC_RFANT5220110A0T_V08 Sep. 2006 RADIATION PATTERN Radiation Pattern and Gain were dependent on measurement board design. The specification of RFANT5220110A0T antenna was measured based on the PCB size and installation position as shown in the below figure Test Board Vertical Horizontal Y - Z Plane Average Gain= -3.22 dBi Peak Gain = 1.69 dBi Average Gain = -0.82 dBi Peak Gain= -5.42 dBi Average Gain=-8.98 dBi X - Z Plane Average Gain= -3.24 dBi Peak Gain= -5.97 dBi Average Gain= -8.61dBi Peak Gain= 2.66 dBi Average Gain= -0.91 dBi X - Y Plane Average Gain= -3.12 dBi Peak Gain= -5.97 dBi Average Gain= -9.24dBi Peak Gain= 2.59 dBi Average Gain= -0.68 dBi Empty Area GROUND 30x18 mm WTC X Y Z Empty Area GROUND 30x18 mm WTCWTC X Y Z X Y Z Y Z WTC X Y Z WTC X Y Z WTC X Y Z WTC X Y Z WTC X Y Z WTC X z Y z Y z X z X X Y X Y Walsin Technology Corporation Page 6 of 8 ASC_RFANT5220110A0T_V08 Sep. 2006 „ RELIABILITY TEST „ Mechanical performance Test item Test condition / Test method Specification Solderability Solder temp. : 235 ± 5°C Immersion time: 2 ± 1 sec Solder: SN63 95% min. coverage of all metabolised area Resistance to soldering heat Solder: Sn63 Preheating temperature: 150 ± 10°C Solder Temperature: 260 ± 5°C Immersion time: 10 ± 1 sec Measurement to be made after keeping at room temp. for 24±2 hrs. No mechanical damage. Ceramic surface shall not be exposed in the middle of the termination or on the terminated product edge by leaching. Drop test Height : 75 cm Direction : 3 directions Times : 3 times. No mechanical damage. Samples shall satisfy electrical specification after test.. Environmental characteristics Test item Test condition / Test method Specification Humidity Resistance Humidity:90% to 95% R.H. Tempertaure:40±2°C Time: 500±24 hours. Measurement: After placing for 24 hours Minimum. No mechanical damage. Samples shall satisfy electrical specification after test. Temperature cycle 1. 30±3 minutes at -40°C±3°C, 2. 10~15 minutes at room temperature, 3. 30±3 minutes at +85°±3°C, 4. 10~15 minutes at room temperature, Total 100 continuous cycles Measurement after placing for 48±2 hrs min. No mechanical damage. Samples shall satisfy electrical specification after test. High temperature Temperature: 85°C±2°C Test duration: 24 hours Measurement must be taken after subjection to the above conditions, followed by exposure in room environment for 1 to 2 hours. No mechanical damage. Samples shall satisfy electrical specification after test. Low temperature Temperature: -40°C±3°C Test duration: 24 hours Measurement must be taken after subjection to the above conditions, followed by exposure in room environment for 1 to 2 hours. No mechanical damage. Samples shall satisfy electrical specification after test. SOLDERING CONDITION

BSL Testing Co.,Ltd.Report No.: BSL23111710-P01R01 Page 1 of 34 FCC PART 15 SUBPART C TEST REPORT FCC PART 15.247 Report Reference No........................: FCC ID.................................................: BSL23111710-P01R01 2BCSV-SANGSTREL Compiled by ( position+printed name+signature) .. : Engineer/ Cindy Zheng Supervised by ( position+printed name+signature)..: Manager/Haley Wen Approved by ( position+printed name+signature)..: RF Manager/ Vivian Jiang Date of issue.........................................:December 11, 2023 Testing Laboratory Name................: BSL Testing Co., Ltd. Address.................................................: 1/F, Building B, Xinshidai GR Park,Shiyan Street, Bao'an District, Shenzhen,Guangdong, 518052, People’s Republic of China Applicant’s name...............................: Shenzhen Hebai Optical Acoustics Co., Ltd Address ................................................. : No.12, Tongfuyu Industrial Zone, Xinhe Community, Fuhai Street, Baoan District, Shenzhen City Test specification .............................. : Standard ................................................ : FCC Part 15.247 BSL Testing Co., Ltd.All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the BSL Testing Co., Ltd. is acknowledged as copyright owner and source of the material. BSL Testing 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. Equipment description ..................... : Sport Audio Glasses Trade Mark............................................: N/A Manufacturer.........................................:Shenzhen Hebai Optical Acoustics Co., Ltd Model/Type reference.........................:SANGSTRE Liszt Listed Models......................................: VocalSkull Sports Modulation...........................................:GFSK Frequency .............................................. From 2402MHz to 2480MHz Ratings...................................................:DC 3.7V from battery or DC 5.0V from USB Port Result ..................................................... :PASS BSL Testing Co.,Ltd.Report No.: BSL23111710-P01R01 Page 2 of 34 TEST REPORT Equipment under Test:Sport Audio Glasses Model /Type:SANGSTRE Liszt Listed Models:VocalSkull Sports Model Declaration:PCB board, structure and internal of these model(s) are the same,So no additional models were tested. Applicant : Shenzhen Hebai Optical Acoustics Co., Ltd Address: No.12, Tongfuyu Industrial Zone, Xinhe Community, Fuhai Street, Baoan District, Shenzhen City Manufacturer : Shenzhen Hebai Optical Acoustics Co., Ltd Address: No.12, Tongfuyu Industrial Zone, Xinhe Community, Fuhai Street, Baoan District, Shenzhen City Test Result:PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. BSL Testing Co.,Ltd.Report No.: BSL23111710-P01R01 Page 3 of 34 Contents 1T E S T S T A N D A R D S ............................................................................................................................... 4 2S U M M A R Y .................................................................................................................................................... 5 2.1General Remarks5 2.2Product Description5 2.3Equipment Under Test5 2.4Short description of the Equipment under Test (EUT)5 2.5EUT operation mode6 2.6Block Diagram of Test Setup6 2.7Related Submittal(s) / Grant (s)6 2.8Modifications6 3T E S T E N V I R O N M E N T.........................................................................................................................7 3.1Address of the test laboratory7 3.2Test Facility7 3.3Environmental conditions7 3.4Summary of measurement results8 3.5Statement of the measurement uncertainty8 3.6Equipments Used during the Test9 4T E S T C O N D I T I O N S A N D R E S U L T S....................................................................................1 1 4.1AC Power Conducted Emission11 4.2Radiated Emissions and Band Edge14 4.3Maximum Peak Output Power21 4.4Power Spectral Density22 4.56dB Bandwidth24 4.6Out-of-band Emissions26 4.7Antenna Requirement29 5T E S T S E T U P P H O T O S O F T H E E U T .................................................................................. 3 0 6P H O T O S O F T H E E U T....................................................................................................................3 1 BSL Testing Co.,Ltd.Report No.: BSL23111710-P01R01 Page 4 of 34 1 T E S T S T A N D A R D S The tests were performed according to following standards: FCC Rules Part 15.247: Frequency Hopping, Direct Spread Spectrum and Hybrid Systems that are in operation within the bands of 902-928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz. ANSI C63.10-2013: American National Standard for Testing Unlicensed Wireless Devices KDB558074 D01 V05r02:Guidance for Performing Compliance Measurements on Digital Transmission Systems (DTS) Operating Under §15.247 BSL Testing Co.,Ltd.Report No.: BSL23111710-P01R01 Page 5 of 34 2 S U M M A R Y 2.1 General Remarks Date of receipt of test sample:November 17, 2023 Testing commenced on:November 17, 2023 Testing concluded on: November 30, 2023 2.2 Product Description Product Description:Sport Audio Glasses Model/Type reference:SANGSTRE Liszt Power supply:DC 3.7V from battery or DC 5.0V from USB Port Adapter information (Auxiliary test supplied by testing Lab） Model: EP-TA20CBC Input: AC 100-240V 50/60Hz Output: DC 5V 2A Firmware Version: EPTA5.14.2 Manufacture: Huizhou Dongyang Yienbi Electronics Co., Ltd Testing sample ID： BSL23111710-P01R01-1# (Engineer sample), BSL23111710-P01R01-2# (Normal sample) Bluetooth BLE Supported type:Bluetooth low Energy Modulation: GFSK Operation frequency: 2402MHz to 2480MHz Channel num…

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FCCID:2BCSV-SANGSTREL