2BP4H-FSB02-CCCharging Case

MANUAL Please read the instructions carefully before use, and keep these instructions for future reference B02 0102030405 0607080910111213 1415161718192021 2223242526272829 3031323334353637 3839404142434445 464849 47 Thank you for choosing Flysound Hearing Aids to enhance your hearing experience and improve your quality of life. These hearing aids are individually fitted and fine-tuned to meet your specific hearing needs; therefore, they are not suitable for use by others. Carefully and thoroughly read the user guide before using your hearing aids. It is essential to operate the devices according to the instructions provided. Improper handling may result in damage. Should you have any questions regarding the use or maintenance of your hearing aids, please do not hesitate to contact your hearing care professional. 0102030405 0607080910111213 1415161718192021 2223242526272829 3031323334353637 3839404142434445 464849 47 INSTRUCTIONS FOR USE.................................................................................................................... 01 PRECAUTIONS ................................................................................................................................... 03 ACCESSORIES .................................................................................................................................... 04 PRODUCT STRUCTURE....................................................................................................................... 05 OPERATION GUIDE ............................................................................................................................ 09 MAINTENANCE AND CLEANING ......................................................................................................... 24 TROUBLESHOOTING GUIDE .............................................................................................................. 26 GENERAL WARNINGS ......................................................................................................................... 32 TECHNICAL SPECIFICATIONS............................................................................................................. 41 EXPLANATION OF GRAPHICAL SYMBOLS USED IN MEDICAL DEVICE LABELING.............................. 44 FCC REQUIREMENT ............................................................................................................................ 45 PRODUCT WARRANTY ........................................................................................................................ 48 CONTENTS 0102030405 0607080910111213 1415161718192021 2223242526272829 3031323334353637 3839404142434445 464849 47 INSTRUCTIONS FOR USE PRINCIPLES OF HEARING AIDS Flysound hearing aids capture ambient sounds via a microphone and convert them into electrical signals. The electrical signals are transmitted to the built-in digital chip of the device, where advanced processing such as filtering and amplification is performed to form clear electrical signals. The processed signals are then sent to the sound outlet, converted into sound waves, and conducted to the ear canal via air. They are then transmitted through the middle ear and inner ear, perceived by the auditory nerve, and relayed to the brain to enable sound perception. HEARING AIDS STRUCTURAL COMPONENTS The main components of the hearing aid include the main unit (with built-in microphone, battery and digital chip), sound-collecting nozzle, and charging case. HEARING AIDS SCOPE OF APPLICATION Empirical testing for hearing compensation in patients with air-conducted hearing loss. 0102030405 0607080910111213 1415161718192021 2223242526272829 3031323334353637 3839404142434445 464849 47 CONTRAINDICATIONS Individuals with acute external otitis, tympanitis, acute suppurative otitis media, chronic suppurative otitis media(in the stage of purulent infection), and those allergic to the materials of this product are not suitable for wearing. INDIVIDUALS UNDER THE AGE OF �� SHOULD CONSULT A PHYSICIAN BEFORE USING THIS PRODUCT Individuals under the age of 18 require specialized care. The use of this device without a proper medical evaluation may potentially exacerbate hearing impairment or related conditions. It is essential that hearing aid users under the 18 undergo a recent medical evaluation performed by a qualified physician, preferably an ear, nose, and throat (ENT) specialist. The physician should assess and confirm the suitability of hearing aid use before the device is utilized. 0102030405 0607080910111213 1415161718192021 2223242526272829 3031323334353637 3839404142434445 464849 47 PRECAUTIONS 1.Hearing conditions professionally examined and audiologically tested before, and hearing aids should be under the guidance of a doctor or a professional dispenser of hearing aids. 2.Pay attention to the moisture-proof, shock-proof, high temperature-proof, light-proof, and drop-proof features of the products. 3.Never immerse your hearing aids in any liquid. Remove your hearing aids before swimming and washing your hair and showering; wait for the ear canal to dry after swimming or showering before putting on your hearing aids. 4.Avoid proximity to strong magnetic objects, as this may affect the sensitivity of the hearing aids. 5.If you feel uncomfortable during use, try adjusting the position of the earpiece or replacing it with a more suitable sound-collecting nozzle while ensuring comfort. You may also consult customer service. 6.Keep the hearing aid clean. Regularly clean the sound-collecting nozzle, microphone, and earwax or debris at the connection to the ear. 7.You should correctly use the program and the volume switch to control the program. 8.Please use the accessories provided by our company or authorized dealers, the use of other accessories may affect the safety and effectiveness of the product. 0102030405 0607080910111213 1415161718192021 2223242526272829 3031323334353637 3839404142434445 464849 47 US…

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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 2BP4H-FSB02-CC B02-CC 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: 2026-05-29

Externalphotos FCC ID: 2BP4H-FSB02-CC

Size:20*12.6mm

Internalphotos FCC ID: 2BP4H-FSB02-CC Antenna

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 RFExposureEvaluationReport Thetestreportiseffectiveonlywithbothsignatureandspecializedstamp,Theresult(s)showninthisreportreferonlyto thesample(s)tested.WithoutwrittenapprovalofCQA,thisreportcan’tbereproducedexceptinfull. ReportNo.:CQASZ20260400767E-02 Applicant: ShenzhenFlysoundsMedicalTechnologyCo.,Ltd. AddressofApplicant: Room1816,BuildingA,JindingshengkechuangPark,No.356DaheRoad, QinghuCommunity,LonghuaStreet,LonghuaDistrict,Shenzhen EquipmentUnderTest(EUT): EUTName:ChargingCase TestModelNo.:B02-CC ModelNo.:B02-CC BrandName:flysound FCCID:2BP4H-FSB02-CC Standards: 47CFRPart1.1307 47CFRPart2.1093 447498D04InterimGeneralRFExposureGuidancev01 DateofReceipt:2026-04-14 DateofTest:2026-04-14to2026-05-26 DateofIssue:2026-5-29 TestResult:PASS* *Intheconfigurationtested,theEUTcompliedwiththestandardsspecifiedabove TestedBy: (LewisZhou) ReviewedBy: (TimoLei) ApprovedBy: (JackAi) SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260400767E-02 Page:2of7 1Version RevisionHistoryOfReport ReportNo.Version Description IssueDate CQASZ20260400767E-02Rev.01 Initialreport SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260400767E-02 Page:3of7 2Contents Page 1VERSION............................................................................................................................................................................2 2CONTENTS........................................................................................................................................................................3 ..................................................................................................................................................................................................3 3GENERALINFORMATION..............................................................................................................................................4 3.1CLIENTINFORMATION...................................................................................................................................................4 3.2GENERALDESCRIPTIONOFEUT...................................................................................................................................4 3.3GENERALDESCRIPTIONOFBLE...................................................................................................................................4 4SAREVALUATION...........................................................................................................................................................5 4.1RFEXPOSURECOMPLIANCEREQUIREMENT.................................................................................................................5 4.1.1StandardRequirement......................................................................................................................................5 4.1.2Limits....................................................................................................................................................................5 4.1.3EUTRFExposure..............................................................................................................................................7 SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260400767E-02 Page:4of7 3GeneralInformation 3.1ClientInformation Applicant: ShenzhenFlysoundsMedicalTechnologyCo.,Ltd. AddressofApplicant: Room1816,BuildingA,JindingshengkechuangPark,No.356Dahe Road,QinghuCommunity,LonghuaStreet,LonghuaDistrict,Shenzhen Manufacturer: ShenzhenFlysoundsMedicalTechnologyCo.,Ltd. AddressofManufacturer: Room1816,BuildingA,JindingshengkechuangPark,No.356Dahe Road,QinghuCommunity,LonghuaStreet,LonghuaDistrict,Shenzhen Factory: EranTechnology(ShenZhen)Co.,Limited AddressofFactory: Room301,BuildingA4,No.35DafuRoad,ZhanggeCommunity, FuchengStreet,LonghuaDistrict,Shenzhen 3.2GeneralDescriptionofEUT ProductName: ChargingCase ModelNo.: B02-CC TestModelNo B02-CC TradeMark: flysound EUTSupportsRadiosapplication: Bluetoothmode 2402-2480MHz SoftwareVersion: V0.2 HardwareVersion: V01 SampleType: MobilePortableFixLocation EUTPowerSupply: Li-ionbattery:DC3.7V550mAh,ChargebyDC5Vforadapter 3.3GeneralDescriptionofBLE OperationFrequency: 2402MHz~2480MHz BluetoothVersion: V5.0 ModulationTechnique: NonFrequencyHoppingSpreadSpectrum(NFHSS) ModulationType: GFSK NumberofChannel: BLE:40 TransferRate:BLE:1Mbps TestSoftwareofEUT: FCCAssist AntennaType:Chipantenna AntennaGain:2.67dBi SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260400767E-02 Page:5of7 4SAREvaluation 4.1RFExposureComplianceRequirement 4.1.1StandardRequirement 447498D04InterimGeneralRFExposureGuidancev01 3.2.SARTestReductionGuidance SARtestreductionprocedures[Glossary]allowusingaparticularsetoftestdataas representativeofother,similar,testconditions.Thismaybeappliedfordatawithindifferenttest positions(e.g.body,head,extremity),wirelessmodes(e.g.Wi-Fi,cellular),andfrequencybands.This testreductionprocessprovidesfortheuseoftestdataforonespecificchannel,whilereferencingto thosedatafordemonstratingcomplianceinotherrequiredchannelsforeachtestpositionofan exposurecondition,withintheoperatingmodeofafrequencyband.Thisislimitedspecificallytowhen thereported1-gor10-gSARforthemid-bandorhighestoutputpowerchannelmeetsanyofthe followingconditions. 4.1.2Limits SAR-basedthresholdsarederivedbasedonfrequency,power,andseparationdistanceoftheRF source.Theformuladefinesthethresholdsingeneralforeitheravailablemaximumtime averaged powerormaximumtime-averagedERP,whicheverisgreater. IftheERPofadeviceisnoteasilydetermined,suchasforaportabledevicewithasmallform factor,theapplicantmayusetheavailablemaximumtime-averagedpowerex…

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2.4GHz 3216 Chip Antenna: HT-3216-C07 _ Application: WLAN,802.11b/g,Bluetooth,WLAN,etc... Features SMD,highreliability,ultraImpact,Omni-directional... PartnumberInformation F245 C 07 HT (A)(B)(C) (D)(E) (F) Electrical Specification The specification is defined on EVB. Dimension and Terminal Configuration No.Terminal Name 1Feeding/GNG 2GND/Feeding (A)Product TypeChip Antenna (B) Size Code 3.2x1.6mm( ± 0.2mm) (C) MaterialHigh K material (D) Frequency2.4 ~ 2.5GHz (E) Feeding modePIFA & Single Feeding (F) Antenna typeType=0X Working Frequency Range2400 ~2500 MHz Bandwidth120 MHz (Min.) Peak Gain2.67 dBi (Typ.) Impedance50 Ohm Return loss10 dB ( Min) PolarizationLinear Azimuth BeamwidthOmni-directional Operation Temperature( °C )-40 ~85 °C Resistance to Soldering Heats 10sec. ( @ 280 °C ) TerminationNi / Au (Leadless) Dimension (mm) L 3.20±0.20 W 1.60±0.20 T 0.45±0.20 電話: 18665849001  3216 深圳市合拓科技有限公司 Shenzhen Hetuo Technology Co.,Ltd. TEL: 18665934465 Room 1202B, Comprehensive Building, C6 Tower, Hengfeng Industrial City, No. 739 Zhou Shi Road, Hezhou Community, Hangcheng Street, Bao'an District, Shenzhen, China 2.4GHz 3216 Chip Antenna: HT-3216-C07 _ 1 Evaluation BoardReference PCB DimensionAntenna Layout Reference Unit :mm Electrical Characteristics Return Loss & Radiation Return Loss Frequency(MHz) S11(dB) 2400-10.50 2450-30.62 2500-11.47 Radiation X Y Z 深圳市合拓科技有限公司 Shenzhen Hetuo Technology Co.,Ltd. 2.4GHz 3216 Chip Antenna: HT-3216-C07 _ Taping Specifications Reel and Taping Specification Reel Specification TYPESIZEABCD 32167” 5K/Reel 9.0±0.5 60±213.5±0.5178±2 Tapping Specification PackagingTypeABWEFGHTψDP Paper Type 3216 1.90±0.20 3.50±0.20 8.0±0.20 1.75±0.10 3.5±0.05 4.0±0.10 2.0±0.05 0.75±0.10 1.50±0.10 4.0±0.1 深圳市合拓科技有限公司 Shenzhen Hetuo Technology Co.,Ltd. 2.4GHz 3216 Chip Antenna: HT-3216-C07 _ Reliability Table Test ItemProcedure Requirements Ceramic Type Remark (Reference) Electrical Characterization Fulfill the electrical specification User Spec. Thermal Shock 1. Preconditioning: 50 ± 10°C/ 1 hr , then keep for 24 ± 1 hrs at room temp. 2. Initial measure: Spec: refer Initialspec. 3. Rapid change of temperature test: -30°Cto +85°C; 100 cycles; 15 minutes at Lower category temperature; 15 minutes at Upper category temperature. No Visible Damage. Fulfill the electrical specif ication. MIL-STD-202 107 Temperature Cycling 1. Initial measure: Spec: refer Initialspec. 2. 100 Cycles (-30°Cto +85°C), Soak Mode=1 (2 Cycle/hours). 3. Measurement at 24 ± 2Hours after testcondition. No Visible Damage. Fulfill the electrical specification. JESD22 JA104 High Temperature Exposure 1. Initial measure: Spec: refer Initialspec. 2. Unpowered; 500hours @ T=+85°C. 3. Measurement at 24 ± 2 hours aftertest. No Visible Damage. Fulfill the electrical specific ation. MIL-STD-202 108 Low Temperature Storage 1. Initial measure: Spec: refer Initialspec. 2. Unpowered: 500hours @ T=-30°C. 3. Measurement at 24 ± 2 hours aftertest. No Visible Damage. Fulfill the electrical specification. MIL-STD-202 108 Solderability (SMD Bottom Side) Dipping method: a. Temperature: 235 ±5°C b. Dipping time: 3 ±0.5s The solder should cover over 95% of the critical area of bottom side. IEC 60384-21/22 4.10 Soldering Heat Resistance (RSH) Preheating temperature: 150 ± 10°C. Preheating time: 1~2 min. Solder temperature: 260 ± 5°C. Dipping time: 5 ± 0.5s No Visible Damage.IEC 60384-21/22 4.10 Vibration5g's for 20 min., 12 cycles each of 3 orientations Note: Use 8"X5" PCB .031" thick 7 secure points on, one long side and 2 secure points at corners of opposite sides. Parts mounted within 2" from any secure point. Test from 10-2000 Hz. No Visible Damage.MIL-STD-202 Method 204 Mechanical Shock Three shocks in each directio n shall be applied along the three mutually perpendicular axes of the test specimen (18 shocks) Peak value: 1,500g’s Duration: 0.5ms Velocity change: 15.4 ft/s Waveform: Half-sine No Visible Damage.MIL-STD-202 Method 213 Humidity Bias 1. Humidity: 85% R.H., Temperature:85 ± 2 °C. 2. Time: 500 ± 24hours. 3. Measurement at 24 ± 2hrs after testcondition. No Visible Damage. Fulfill the electrical specification. MIL-STD-202 Method 106 深圳市合拓科技有限公司 Shenzhen Hetuo Technology Co.,Ltd. 2.4GHz 3216 Chip Antenna: HT-3216-C07 _ Board Flex (SMD) 1. Mounting method: IR-Reflow. PCB Size (L:100 × W:40 × T:1.6mm) 2. Apply the load in direction of the arrow until bending reaches 2 mm. No Visible Damage.AEC-Q200 005 AdhesionForce of 1.8Kg for 60 seconds. No Visible Damage Magnification of 20X or greater may be employed for inspection of the mechanical integrity of the device body terminals and body/terminal junction. AEC-Q200 006 Physical Dimension Any applicable method using x10 magnification, micrometers, calipers, gauges, contour projectors, or other measuring equipment, capable of determining the actual specimen dimensions. In accordance with specification. JESD22 JB100 Revision History RevisionDateContent 12019/03/01 New Datasheet 22020/02/22 Add 2D radiation characteristic 深圳市合拓科技有限公司 Shenzhen Hetuo Technology Co.,Ltd.

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)showninthisreportreferonly tothesample(s)tested.WithoutwrittenapprovalofCQA,thisreportcan’tbereproducedexceptinfull. ReportNo.:CQASZ20260400767E-01 Applicant: ShenzhenFlysoundsMedicalTechnologyCo.,Ltd. AddressofApplicant: Room1816,BuildingA,JindingshengkechuangPark,No.356DaheRoad, QinghuCommunity,LonghuaStreet,LonghuaDistrict,Shenzhen EquipmentUnderTest(EUT): Product:ChargingCase ModelNo.:B02-CC TestModelNo.:B02-CC BrandName:flysound FCCID:2BP4H-FSB02-CC Standards:47CFRPart15,SubpartC KDB558074D0115.247MeasGuidancev05r02 ANSIC63.10:2020 DateofReceipt:2026-04-14 DateofTest:2026-04-14to2026-05-26 DateofIssue:2026-5-29 TestResult:PASS* *Intheconfigurationtested,theEUTcompliedwiththestandardsspecifiedabove. TestedBy: (LewisZhou) ReviewedBy: (TimoLei) ApprovedBy: (JackAi) SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260400767E-01 Page: 2 of 61 1Version RevisionHistoryOfReport ReportNo.Version Description IssueDate CQASZ20260400767E-01Rev.01Initialreport SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260400767E-01 Page: 3 of 61 2TestSummary TestItemTestRequirementTestmethodResult AntennaRequirement 47CFRPart15,SubpartCSection 15.203/15.247(c) ANSI C63.10- 2020+Cor.1- 2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS ACPowerLine Conducted Emission 47CFRPart15,SubpartCSection 15.207 ANSI C63.10- 2020+Cor.1- 2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS ConductedPeakOutput Power 47CFRPart15,SubpartCSection 15.247(b)(3) ANSI C63.10- 2020+Cor.1- 2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS 6dBOccupied Bandwidth 47CFRPart15,SubpartCSection 15.247(a)(2) ANSI C63.10- 2020+Cor.1- 2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS PowerSpectralDensity 47CFRPart15,SubpartCSection 15.247(e) ANSI C63.10- 2020+Cor.1- 2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS Band-edgeforRF ConductedEmissions 47CFRPart15,SubpartCSection 15.247(d) ANSI C63.10- 2020+Cor.1- 2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS RFConductedSpurious Emissions 47CFRPart15,SubpartCSection 15.247(d) ANSI C63.10- 2020+Cor.1- 2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS RadiatedSpurious Emissions 47CFRPart15,SubpartCSection 15.205/15.209 ANSI C63.10- 2020+Cor.1- 2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS Restrictedbandsaround fundamentalfrequency (RadiatedEmission) 47CFRPart15,SubpartCSection 15.205/15.209 ANSI C63.10- 2020+Cor.1- 2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260400767E-01 Page: 4 of 61 3Contents Page 1VERSION..........................................................................................................................................................................2 2TESTSUMMARY............................................................................................................................................................3 3CONTENTS......................................................................................................................................................................4 4GENERALINFORMATION...........................................................................................................................................5 4.1CLIENTINFORMATION.................................................................................................................................................5 4.2GENERALDESCRIPTIONOFEUT.................................................................................................................................5 4.3ADDITIONALINSTRUCTIONS........................................................................................................................................7 4.4TESTENVIRONMENT...................................................................................................................................................8 4.5DESCRIPTIONOFSUPPORTUNITS...............................................................................................................................8 4.6TESTCONFIGURATION................................................................................................................................................8 4.7STATEMENTOFTHEMEASUREMENTUNCERTAINTY....................................................................................................9 4.8TESTLOCATION........................................................................................................................................................10 4.9TESTFACILITY..........................................................................................................................................................10 4.10DEVIATIONFROMSTANDARDS................................................................................................................................10 4.11OTHERINFORMATIONREQUESTEDBYTHECUSTOMER..........................................................................................10 4.12EQUIPMENTLIST.....................................................................................................................................................11 5TESTRESULTSANDMEASUREMENTDATA.....................................................................................................12 5.1ANTENNAREQUIREMENT..........................................................................................................................................12 5.2CONDUCTEDEMISSIONS............................................................................................................................................13 5.3CONDUCTEDPEAKOUTPUTPOWER...............…

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Setupphotos 1Photographs-EUTTestSetup 1.1RadiatedSpuriousEmission 9kHz~30MHz: 30MHz~1GHz: FCC ID: 2BP4H-FSB02-CC Above1GHz: 1.2ConductedEmissionsTestSetup 1.3RFConductedmeasurement