2BFHZ-S1PROHELMET WIRELESS EARPHONE

NingboMohangIntelligentTechnologyCo.,Ltd (2024.08.01) EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:AttestationStatementsPart2.911(d)(5)(i)requestfor(FCCID:2BFHZ-S1PRO) [NingboMohangIntelligentTechnologyCo.,Ltd](“theapplicant”)certifiesthatthe equipmentforwhichauthorizationissoughtisnot“covered”equipmentprohibited fromreceivinganequipmentauthorizationpursuanttosection2.903oftheFCCrules. Sincerely, (Applicantsignature) (Applicantprintedname)JuanjueWang NingboMohangIntelligentTechnologyCo.,Ltd (2024.07.29) EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:AttestationStatementsPart2.911(d)(5)(ii)requestfor(FCCID:2BFHZ-S1PRO) [NingboMohangIntelligentTechnologyCo.,Ltd](“theapplicant”)certifiesthat,asof thedateofthefilingoftheapplication,theapplicantisnotidentifiedontheCovered Listasanentityproducing“covered”equipment. Sincerely, (Applicantsignature) (Applicantprintedname)JuanjueWang

ProductechCorporation 79014THSTN,SUITE4240,St.Petersburg,FL,33702,USA 2.911(d)(7)USAAgentv1.2 Section2.911(d)(7)USAAgentforServiceofProcess FCCID:2BFHZ-S1PRO 2.911(d)(7)USADesignatedAgentforServiceofProcess We,[ProductechCorporation](“theapplicant”)designate[ProductechCorporation] NOTE1 forthepurposeofacceptingservice ofprocessonbehalfoftheapplicant. Applicantconsent:WeAcknowledgeourconsenttoacceptserviceofprocessintheUnitedStatesformattersrelatedtothe applicableequipment,andatthephysicalU.S.addressandemailaddressofthedesignatedagentandacknowledgeour acceptanceofourobligationtomaintainanagentforserviceofprocessintheUnitedStatesfornolessthanoneyearafter eitherthegranteehaspermanentlyterminatedallmarketingandimportationoftheapplicableequipmentwithintheU.S.,or theconclusionofanyCommission-relatedadministrativeorjudicialproceedinginvolvingtheequipment,whicheverislater. Agentobligation:WeAcknowledgeourobligationtoacceptserviceofprocessintheUnitedStatesformattersrelatedtothe applicableequipmentatourphysicalU.S.addressandemailaddressfornolessthanoneyearaftereitherthegranteehas permanentlyterminatedallmarketingandimportationoftheapplicableequipmentwithintheU.S.,ortheconclusionofany Commission-relatedadministrativeorjudicialproceedinginvolvingtheequipment,whicheverislater. USAAgent Companyname:ProductechCorporation Address:79014THSTN,SUITE4240,St.Petersburg,FL, 33702,USA ContactName:AlexanderMalamud TelephoneNo:+17276867370 Email:[email protected] FRN:0033055674 Applicant Companyname:NingboMohangIntelligent TechnologyCo.,Ltd Address:Room1-2346,1stFloor,Building41, BlockB,No.188JinghuaRoad,NingboHigh-tech Zone,ZhejiangProvince ContactName:QISONGWANG TelephoneNo:13423817655 Email:[email protected] Signature:Signature: QISONG.WANG Date:Jul31,2024 NOTE1:AnapplicantlocatedintheUnitedStatesmaydesignateitselfastheagentforserviceofprocess. Reference;FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-comm unications-supply-chain-through-the

NingboMohangIntelligentTechnologyCo.,Ltd AgentAuthorizationLetter 2024-08-01 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 USA RE:LETTEROFAGENTAUTHORIZATION ToWhomItMayConcern: We,theundersigned,herebyauthorizeShenzhenMostTechnologyServiceCo.,Ltd.toact onourbehalfinallmattersrelatingtoapplicationforequipmentauthorization,includingthe signingofalldocumentsrelatingtothesematters. Wealsoherebycertifythatnopartytotheapplicationauthorizedhereunderissubjecttothe denialofbenefits,includingFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuse Actof1988,21U.S.C.853(a). Thisagreementexpiresoneyearfromthecurrentdate. Sincerely, Name:JuanjueWang Position:Manager CompanyName: NingboMohangIntelligentTechnologyCo.,Ltd Address:Room1-2346,1stFloor,Building41,BlockB,No.188JinghuaRoad, NingboHigh-tech,Ningbo,China Tel/Fax15757851781/15757851781 E-Mail:[email protected]

NingboMohangIntelligentTechnologyCo.,Ltd LongTermConfidentialityRequestLetter 2024-08-01 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 USA RE:CONFIDENTIALITYREQUESTFOR(FCCID:2BFHZ-S1PRO) ToWhomItMayConcern: Thisletterservesasanofficialrequestforconfidentialityundersections0.457and0.459of CFR47.Wehaverequestedthatthe -e.g.Blockdiagram -e.g.SCH -e.g.OperationalDescription requiredtobesubmittedwiththisapplicationbepermanentlywithheldfrompublicreview. Theabovedocumentsarecompanyproprietaryinformationthatcouldnevergetinto thepossessionofyourcompetition. Pleasecontactmeifthereisanyinformationyoumayneed. Sincerely, Name:JuanjueWang Position:Manager CompanyName: NingboMohangIntelligentTechnologyCo.,Ltd Address:Room1-2346,1stFloor,Building41,BlockB,No.188JinghuaRoad, NingboHigh-tech,Ningbo,China Tel/Fax15757851781/15757851781 E-Mail:[email protected]

Modeldifferenceletter 2024.08.01 DearMETReviewer, ThisisanewApplicationfromNingboMohangIntelligentTechnologyCo., Ltd ModelNo.:BLAISES1PRO 、 S1PRO 、 S2PRO 、 S3PRO 、 S4PRO 、 S5PRO 、 R1PRO 、 R2PRO 、 R3PRO 、 R4PRO 、 R5PRO UseBLAISES1PROforalltests . Onlythemodelnameisdifferent,other designsarethesame,Theinternalcircuit,circuitlayoutandchipcomponents arethesame. Thankyouforyourcooperation! Yourssincerely, Signatory: Name:JuanjueWang Position:Manager CompanyName: NingboMohangIntelligentTechnologyCo.,Ltd Address:Room1-2346,1stFloor,Building41,BlockB,No.188JinghuaRoad,Ningbo High-tech,Ningbo,China Tel/Fax15757851781/15757851781 E-Mail:[email protected]

Model No.: BLAISE S1 PRO FRONT VIEW OF SAMPLE BACK VIEW OF SAMPLE Model No.: BLAISE S1 PRO LEFT VIEW OF SAMPLE RIGHT VIEW OF SAMPLE Model No.: BLAISE S1 PRO TOP VIEW OF SAMPLE BOTTOM VIEW OF SAMPLE Model No.: BLAISE S1 PRO PHOTO OF THE ENTIRE SAMPLE

Label: Productname:HELMETWIRELESSEARPHONE Productmodel:BLAISES1PRO FCCID:2BFHZ-S1PRO Labellocation Size:20*10mm

Model No.: BLAISE S1 PRO Page 1 of 4 INTERNAL PHOTO OF SAMPLE INTERNAL PHOTO OF SAMPLE BT antenna Model No.: BLAISE S1 PRO Page 2 of 4 INTERNAL PHOTO OF SAMPLE PCB INTERNAL PHOTO OF SAMPLE PCB Model No.: BLAISE S1 PRO Page 3 of 4 INTERNAL PHOTO OF SAMPLE PCB INTERNAL PHOTO OF SAMPLE PCB Model No.: BLAISE S1 PRO Page 4 of 4 INTERNAL PHOTO OF SAMPLE PCB

Shenzhen Most Technology Service Co., Ltd. No.5, 2nd Langshan Road, North District, Hi-tech Industrial Park, Nanshan, Shenzhen, Guangdong, China. RF Exposure Evaluation Report Report Reference No. ..................... : FCC ID.. ........................................... : MTEB24070261-H 2BFHZ-S1PRO Compiled by ( position+printed name+signature) .. : File administrators Alisa Luo Supervised by ( position+printed name+signature) .. : Test Engineer Sunny Deng Approved by ( position+printed name+signature) .. : Manager Yvette Zhou Date of issue ..................................... : July 18,2024 Representative Laboratory Name .: Shenzhen Most Technology Service Co., Ltd. Address ............................................ : No.5, 2nd Langshan Road, North District, Hi-tech Industrial Park, Nanshan, Shenzhen, Guangdong, China. Applicant’s name ............................ : Ningbo Mohang Intelligent Technology Co., Ltd Address ............................................ : Room 1-2346, 1st Floor, Building 41, Block B, No.188 Jinghua Road, Ningbo High-tech Zone, Zhejiang Province Test specification/ Standard ..........: 47 CFR Part 1.1307 47 CFR Part 2.1093 TRF Originator .................................. : Shenzhen Most Technology Service Co., Ltd. Shenzhen Most Technology Service Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Most Technology Service Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen Most Technology Service 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. Test item description .....................: HELMET WIRELESS EARPHONE Trade Mark ....................................... : Model/Type reference....................... : BLAISE S1 PRO Listed Models .................................. : S1PRO、S2 PRO、S3 PRO、S4 PRO、S5 PRO 、R1PRO、 R2 PRO、R3 PRO、R4 PRO、R5 PRO Modulation Type ............................... : GFSK, π/4DQPSK, 8DPSK Operation Frequency ........................ : From 2402MHz to 2480MHz Hardware Version .............................. V1.3 Software Version ............................... V1.5 Rating ............................................... : DC 3.7V by Battery DC 5V by USB Port Result................................................ : PASS Report No.: MTEB24070261-H Page 2 of 5 T E S T R E P O R T Equipment under Test : HELMET WIRELESS EARPHONE Model /Type : BLAISE S1 PRO Listed Models : S1PRO、S2 PRO、S3 PRO、S4 PRO、S5 PRO 、R1PRO、 R2 PRO、R3 PRO、R4 PRO、R5 PRO Remark Only the model name is different, other designs are the same Applicant : Ningbo Mohang Intelligent Technology Co., Ltd Address : Room 1-2346, 1st Floor, Building 41, Block B, No.188 Jinghua Road, Ningbo High-tech Zone, Zhejiang Province Manufacturer : Ningbo Mohang Intelligent Technology Co., Ltd Address : Room 1-2346, 1st Floor, Building 41, Block B, No.188 Jinghua Road, Ningbo High-tech Zone, Zhejiang Province 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. Report No.: MTEB24070261-H Page 3 of 5 1. R e v i s i o n H i s t o r y Revision Issue Date Revisions Revised By 00 2024.07.18 Initial Issue Alisa Luo Report No.: MTEB24070261-H Page 4 of 5 2. S A R E v a l u a t i o n 2.1 RF Exposure Compliance Requirement 2.1.1 Standard Requirement According to KDB447498D01 General RF Exposure Guidance v06 4.3.1. Standalone SAR test exclusion considerations 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 Exclusion Threshold condition, listed below, is satisfied. 2.1.2 Limits The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(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 The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion Report No.: MTEB24070261-H Page 5 of 5 2.1.3 EUT RF Exposure Measurement Data BT classic GFSK Test channel Peak Output Power (dBm) Tune up tolerance (dBm) Maximum tune-up Power (dBm) Lowest(2402MHz) 2.643 2.643±1 3.643 Middle(2441MHz) 3.037 3.037±1 4.037 Highest(2480MHz) 2.578 2.578±1 3.578 π/4DQPSK Test channel Peak Output Power (dBm) Tune up tolerance (dBm) Maximum tune-up Power (dBm) Lowest(2402MHz) 0.163 0.163±1 1.163 Middle(2441MHz) 0.547 0.547±1 1.547 Highest(2480MHz) 0.054 0.054±1 1.054 8DPSK Test channel Peak Output Power (dBm) Tune up tolerance (dBm) Maximum tune-up Power (dBm) Lowest(2402MHz) 0.611 0.611±1 1.611 Middle(2441MHz) 1.000 1.000±1 2 Highest(2480MHz) 0.518 0.518±1 1.518 Worst case: GFSK Channel Maximum Peak Conducted Output Power (dBm) Maximum tune-up Power Calculated value Exclusion threshold SAR Test Exclusion (dBm) (mW) Middle(2441MHz) 3.037 4.037 2.53 0.79 3.0 Yes .......................THE END OF REPORT.........................

Shenzhen Most Technology Service Co., Ltd. No.5, 2nd Langshan Road, North District, Hi-tech Industrial Park, Nanshan, Shenzhen, Guangdong, China. TEST REPORT FCC Rules Part 15.247 Report Reference No. ....................... : FCC ID.. ............................................... : MTEB24070261-R 2BFHZ-S1PRO Compiled by ( position+printed name+signature) .. : File administrators Alisa Luo Supervised by ( position+printed name+signature)..: Test Engineer Sunny Deng Approved by ( position+printed name+signature) .. : Manager Yvette Zhou Date of issue ......................................... :July 18,2024 Representative Laboratory Name . : Shenzhen Most Technology Service Co., Ltd. Address.................................................: No.5, 2nd Langshan Road, North District, Hi-tech Industrial Park, Nanshan, Shenzhen, Guangdong, China. Applicant’s name ............................... :Ningbo Mohang Intelligent Technology Co., Ltd Address ................................................. : Room 1-2346, 1st Floor, Building 41, Block B, No.188 Jinghua Road, Ningbo High-tech Zone, Zhejiang Province Test specification/Standard ............ : FCC Rules Part 15.247 TRF Originator ...................................... : Shenzhen Most Technology Service Co., Ltd. Shenzhen Most Technology Service Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Most Technology Service Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen Most Technology Service 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. Test item description........................: HELMET WIRELESS EARPHONE Trade Mark ............................................ : Model/Type reference ......................... : BLAISE S1 PRO Listed Models ...................................... : S1PRO、S2 PRO、S3 PRO、S4 PRO、S5 PRO、R1PRO、 R2 PRO、R3 PRO、R4 PRO、R5 PRO Modulation Type .................................. : GFSK,π/4DQPSK, 8DPSK Operation Frequency .......................... : From 2402MHz to 2480MHz Hardware Version ................................. V1.3 Software Version ................................... V1.5 Rating.....................................................: DC 3.7V by Battery DC 5V by USB Port Result ..................................................... :PASS Report No.: MTEB24070261-RPage 2 of 56 TEST REPORT Equipment under Test:HELMET WIRELESS EARPHONE Model /Type:BLAISE S1 PRO Listed Models: S1PRO、S2 PRO、S3 PRO、S4 PRO、S5 PRO、R1PRO、 R2 PRO、R3 PRO、R4 PRO、R5 PRO RemarkOnly the model name is different, other designs are the same Applicant:Ningbo Mohang Intelligent Technology Co., Ltd Address: Room 1-2346, 1st Floor, Building 41, Block B, No.188 Jinghua Road, Ningbo High-tech Zone, Zhejiang Province Manufacturer:Ningbo Mohang Intelligent Technology Co., Ltd Address : Room 1-2346, 1st Floor, Building 41, Block B, No.188 Jinghua Road, Ningbo High-tech Zone, Zhejiang Province 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. Report No.: MTEB24070261-RPage 3 of 56 Contents 1 R E V I S I O N H I S T O R Y .........................................................................................................................4 2 TEST STANDARDS........................................................................................................................... 5 3 S U M M A R Y ...............................................................................................................................................6 3.1 General Remarks........................................................................................................................................6 3.2 Product Description...................................................................................................................................6 3.3 Equipment Under Test...............................................................................................................................6 3.4 Short description of the Equipment under Test (EUT)............................................................................6 3.5 EUT operation mode.................................................................................................................................. 7 3.6 Block Diagram of Test Setup.....................................................................................................................7 3.7 Test Item (Equipment Under Test) Description*......................................................................................7 3.8 Auxiliary Equipment (AE) Description......................................................................................................7 3.9 Antenna Information*.................................................................................................................................7 3.10 Related Submittal(s) / Grant (s)...............................................................................................................8 3.11 Modifications............................................................................................................................................ 8 3.12 EUT configuration.................................................................................................................................... 8 4 T E S T E N V I R O N M E N T ......................................................................................................................9 4.1 Address of the test laboratory.................................................................................................................. 9 4.2 Environmental conditions.....................................…

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Tolerances(Unless otherwisespecified) UnictronTechnologiesCorporation Website:www.unictron.com X: ± 1X.X : ± 0.1X.XX : ± 0.01 Angle : ±Hole Dia. : ± Scale :Unit ：mm THISSPECIFICATIONIS THEPROPERTYOFUNICTRON TECHNOLOGIESCORPORATIONANDSHALLNOTBE REPRODUCED OR USEDIN ALL CIRCUMSTANCESWITHOUTWRITTENPERMISSION PreparedBy :shelleyCheckedBy :Joy ApprovedBy :Frank TITLE： BT FPC Antenna PART S2B4PE6F1P08000 REV. NO.A PAGE1OF8 BT FPC Antenna 1. Explanationof Product Number ProductCode: (1) ProductCategories: B4 : FPC Antenna (2) Application: BT antenna (3) Dimensions: (4)Material: F: FPC (5) WorkingFrequencies 1P: 2400~2500 (6) Antenna Series: 08 : serialnumber Tolerances(Unlessotherwisespecified) Unictron Technologies Corporation Website: www.unictron.com X: ± 1 X.X: ± 0.1 X.XX: ± 0.01 Angle: ±HoleDia.: ± Scale:Unit：mm THIS SPECIFICATION IS THE PROPERTY OF UNICTRON TECHNOLOGIES CORPORATION AND SHALL NOT BE REPRODUCED OR USED IN ALL CIRCUMSTANCES WITHOUT WRITTEN PERMISSION PreparedBy:shelleyCheckedBy:Joy ApprovedBy:Frank TITLE： BT FPC Antenna PART S2B4PE6F1P08000 REV. NO.A PAGE2OF8 2. Features *Stable and reliable in performances *Compact size *RoHS compliance 3.Applications * Hand-held devices when BT. 4.Description Unictron’s FPC antenna series are specially designed for BT applications. Based on Unictron’s proprietary design and processes, this FPC antenna has excellent stability and sensitivity to consistently provide high signal reception efficiency. 5. ElectricalSpecifications 5-1. Electrical Table (2400~2500MHz Band) CharacteristicsSpecificationsUnit Outline Dimensions / mm Frequency 2450 MHz Impedance 50  Polarization Linear Polarization Return Loss TableReturn Loss Freq.Band2.4G Hz2.45G Hz2.5G Hz dB-16.92-16.06-11.63 VSWR TableVSWR Freq.Band2.4G Hz2.45G Hz2.5G Hz 1.371.391.71 GAIN Table Total Gain =Xpol + Ppol Freq.Band 2400MHz2450MHz2480MHz2500MHz Peak Gain(dBi) -1.25-0.00-0.05-0.63 Tolerances(Unless otherwisespecified) UnictronTechnologiesCorporation Website:www.unictron.com X: ± 1X.X : ± 0.1X.XX : ± 0.01 Angle : ±Hole Dia. : ± Scale :Unit ：mm THISSPECIFICATIONIS THEPROPERTYOFUNICTRON TECHNOLOGIESCORPORATIONANDSHALLNOTBE REPRODUCED OR USEDIN ALL CIRCUMSTANCESWITHOUTWRITTENPERMISSION PreparedBy :shelleyCheckedBy :Joy ApprovedBy :Frank TITLE： BT FPC Antenna PART S2B4PE6F1P08000 REV. NO.A PAGE5OF8 7.Return Loss &VSWR ReturnLoss(S 11 ) &VSWR(S 11 ) Tolerances(Unlessotherwisespecified) Unictron Technologies Corporation Website: www.unictron.com X: ± 1 X.X: ± 0.1 X.XX: ± 0.01 Angle: ±HoleDia.: ± Scale:Unit：mm THIS SPECIFICATION IS THE PROPERTY OF UNICTRON TECHNOLOGIES CORPORATION AND SHALL NOT BE REPRODUCED OR USED IN ALL CIRCUMSTANCES WITHOUT WRITTEN PERMISSION PreparedBy:shelleyCheckedBy:Joy ApprovedBy:Frank TITLE： BT FPC Antenna PART S2B4PE6F1P08000 REV. NO.A PAGE6OF8 Tolerances(Unless otherwisespecified) UnictronTechnologiesCorporation Website:www.unictron.com X: ± 1X.X : ± 0.1X.XX : ± 0.01 Angle : ±Hole Dia. : ± Scale :Unit ：mm THISSPECIFICATIONIS THEPROPERTYOFUNICTRON TECHNOLOGIESCORPORATIONANDSHALLNOTBE REPRODUCED OR USEDIN ALL CIRCUMSTANCESWITHOUTWRITTENPERMISSION PreparedBy :shelleyCheckedBy :Joy ApprovedBy :Frank TITLE： BT FPC Antenna PART S2B4PE6F1P08000 REV. NO.A PAGE7OF8 8.RadiationPattern 8-1.3D GainPattern@ 2450 MHz (unit:dBi) Tolerances(Unless otherwisespecified) UnictronTechnologiesCorporation Website:www.unictron.com X: ± 1X.X : ± 0.1X.XX : ± 0.01 Angle : ±Hole Dia. : ± Scale :Unit ：mm THISSPECIFICATIONIS THEPROPERTYOFUNICTRON TECHNOLOGIESCORPORATIONANDSHALLNOTBE REPRODUCED OR USEDIN ALL CIRCUMSTANCESWITHOUTWRITTENPERMISSION PreparedBy :shelleyCheckedBy :Joy ApprovedBy :Frank TITLE： BT FPC Antenna PART S2B4PE6F1P08000 REV. NO.A PAGE8OF8 9.RevisionControl: RevisionDateContentRemark AMar .27 .202 4New Issued.N/A ·

Model No.: BLAISE S1 PRO CE TEST SETUP RE TEST SETUP Model No.: BLAISE S1 PRO RE TEST SETUP