2A3NOCZ-B801Hearing Aids

L 100% R 100% 100% 18�25 Applicable to CZ-B801 OTC Content 1.Product Introduction.............................................................................. 1.1 Schematic diagram........................................................................... 1.2 Specifications...................................................................................... 1.3 Product accessories.......................................................................... 2.Preparations before use........................................................................ 3.Instructions for use................................................................................. 3.1 How to wear ..................................................................................... 3.2 Power On/Off..................................................................................... 3.3 Volume adjustment.......................................................................... 3.4 Mode Switch...................................................................................... 3.5 UV lamp disnfection funtion......................................................... 3.6 Battery indicator............................................................................... 3.7 Bluetooth operation........................................................................ 3.8 Restore factory settings................................................................ 3.9APP feature introduction................................................................ 3.10 Use of ear tips................................................................................. 3.11 Use of batteries.............................................................................. 4.Precautions................................................................................................ 01 3 3 4 5 6 6 6 7 7 8 9 9 10 11 11 14 14 15 02 Germany Retevis Technology GmbH Uetzenäcker 29, 38176 Wendeburg [email protected] Tel:+0049 053029369179 EC REP Please scan the QR code next to obtain user manual in other languages, such as German/Russian/Japanese/Spanish/Italian, which will help you better understand and use this product. 1. Product Introduction 1.1 Schematic diagram 18�25 1 2 3 4 5 6 7 8 9 10 11 12 13 1: Charging Contacts Pins 2: Display Screen 3: Volume up/down button 4: Type-C charging port 5: Reset button 6: Bluetooth connection indicator 7: Earphone battery indicator 8: Battery level indicator of charging case 9: Sound tube 10: Ear tip 11: Speaker 12: Sound pickup hole 13: Earphone charging contact 03 1.2 Specifications Description Parameter value Wearing Instructions Behind-the-ear Full Gain Max FOG50 45±3dB FOG50 HFA Avg 42dB±3dB OSPL90 OSPL90 HFA Avg EQ Input Noise Total Harmonic Distort Frequency response range Charging value for case Charging time for ear Earphone working time ≤113dB±4dB 110dB±4dB ≤5B±3dB ≤2%±3% No narrower than 200Hz~6000Hz TYPE-C port, 5V/1A 1-2hours ＞12Hours(hearing aid mode) Earphone operating voltage 3.85V@6mA Battery of charging case 902035PL, 3.7V/650mAh,2.41Wh,11.9g（If a battery catches fire, it is recommended to use water-based fire extinguishing agents） Battery of a single earphone Z45FH, 3.85V/60mAh, 0.23Wh, 1.3g（If a battery catches fire, it is recommended to use water-based fire extinguishing agents） Bluetooth 5.3Version, 2402~2480MHz, RF<10mW Headphone power consumption when turned off ＜30uA 04 Description Parameter value Transmitting power of the charging case -2dBm~8dBm Frequency offset -15KHz~+15KHz Reception sensitivity ≤-80dBm Note: The above data are all laboratory test data, Due to the complexity of real-life scenarios, some differences may arise, but they do not affect normal use. 1.3 Product accessories Name Quantity and Purpose Anti-loss strap 1pcs Ear tips Open ear tips：3 types, 6 pieces in total, made of silicone Closed ear tips: 3 types, 6 pieces in total, made of silicone Cerumen shield Charging cable Cleaning brush After-sales Service Card Quick operation guide Adaptation period guidance card User Manual 1 set 1 set Magnetic steel needle brush 1pcs 1pcs 1pcs 1pcs 05 2.Preparations before use (1) Open the charging case and check the battery level of the charging case; if the battery is very low, please charge the case first. (2) Please take out the earphones from the charging case, remove the protective film on the earphone charging pin, and then put the earphones back into the charging case. At this point, if you notice on the charging case screen that the earphone battery is low, please charge the earphones for at least 15 minutes before using them again;. (3) When wearing earphones, please choose the appropriate size of eartips to enhance your experience during use. (4) When wearing earphones, adjust the volume + and - buttons to check if the volume adjustment function of the earphones is working properly. (5) Before use, please read this product manual carefully, which will help you quickly understand the operation of the product; Tips:The earphones will power on automatically about 10 seconds after being removed from the charging case. To avoid howling, do not grip the earphones tightly or place the left and right together closely. 3. Instructions for Use 3.1 How to wear (1) The wearing method is as shown in the below figure: Step 1: Place the earphones behind your ears. Please refer to the illustration - place the body of the earphone behind the auricle and the tube at the front. 06 Step 3: Gently insert the earbud into the ear canal until the receiver cable is close to the inner side of the ear. Please ensure to choose the appropriate eartips to facilitate a tight fit between the earbud and the ear canal; (3) After correctly wearing the earphones, adjust the volume + and - buttons until the volume level is appropriate. 3.2 Power On/Off Power on: When the charging case cover is opened, the display screen lights up. After taking out the earphones, they automatically power on and provide a voic…

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Internal Photos Left Right Report No.: CHTW26075051 Page 42 of 43

Test Setup Photos Liquid depth in the flat Phantom Edge1(0mm) Edge2(0mm) Edge3(0mm) Edge4(0mm) Edge5(0mm) Edge6(0mm)

TEST SETUP PHOTOS Conducted Radiated Emission AC Conducted Emission

APPENDIX REPORT Project No. SHT2606033403W Radio Specification Bluetooth EDR Test sample No. YPHT26060334002 Model No. CZ-B801 Start test date 2026-7-27 Finish date 2026-7-27 Temperature 23.6°C Humidity 56% Test Engineer Auditor Appendix clause Test item Result A Peak Output Power PASS B 20dB Bandwidth PASS C 99% Occupied Bandwidth PASS D Carrier Frequency Separation PASS E Hopping Channel Number PASS F Dwell Time PASS G Duty Cycle Correction Factor (DCCF) PASS H Band edge and Spurious Emission(Conducted) PASS Appendix A: Peak Output Power Test Result Peak Test Mode Frequency[MHz] Peak Output Power[dBm] Average Output Power[dBm] Limit[dBm] Verdict DH5 2402 13.03 12.92 ≤30 PASS DH5 2441 13.11 13.01 ≤30 PASS DH5 2480 13.35 13.21 ≤30 PASS 2DH5 2402 12.17 12.02 ≤30 PASS 2DH5 2441 12.35 12.23 ≤30 PASS 2DH5 2480 12.81 12.69 ≤30 PASS 3DH5 2402 12.20 12.00 ≤20.97 PASS 3DH5 2441 12.38 12.23 ≤20.97 PASS 3DH5 2480 12.91 12.76 ≤20.97 PASS Test Graphs DH5-2402-PASS DH5-2441-PASS DH5-2480-PASS 2DH5-2402-PASS 2DH5-2441-PASS 2DH5-2480-PASS 3DH5-2402-PASS 3DH5-2441-PASS 3DH5-2480-PASS Appendix B: 20dB Bandwidth Test Result TestMode Frequency[MHz] 20db Bandwidth [MHz] Limit[MHz] Verdict DH5 2402 0.97 --- --- DH5 2441 0.96 --- --- DH5 2480 0.98 --- --- 2DH5 2402 1.24 --- --- 2DH5 2441 1.25 --- --- 2DH5 2480 1.25 --- --- 3DH5 2402 1.27 --- --- 3DH5 2441 1.28 --- --- 3DH5 2480 1.28 --- --- Test Graphs DH5-2402 DH5-2441 DH5-2480 2DH5-2402 2DH5-2441 2DH5-2480 3DH5-2402 3DH5-2441 3DH5-2480 Appendix C: 99% Occupied Bandwidth Test Result TestMode Frequency[MHz] 99% Occupied Bandwidth [MHz] Limit[MHz] Verdict DH5 2402 0.89610 --- --- DH5 2441 0.89610 --- --- DH5 2480 0.90210 --- --- 2DH5 2402 1.1598 --- --- 2DH5 2441 1.1598 --- --- 2DH5 2480 1.1658 --- --- 3DH5 2402 1.1598 --- --- 3DH5 2441 1.1658 --- --- 3DH5 2480 1.1688 --- --- Test Graphs DH5-2402 DH5-2441 DH5-2480 2DH5-2402 2DH5-2441 2DH5-2480 3DH5-2402 3DH5-2441 3DH5-2480 Appendix D: Carrier Frequency Separation Test Result TestMode Frequency[MHz] Result[MHz] Limit[MHz] Verdict DH5 Hop 1.003 ≥0.980 PASS 2DH5 Hop 1.319 ≥1.250 PASS 3DH5 Hop 1.006 ≥0.853 PASS Test Graphs DH5-Hop-PASS 2DH5-Hop-PASS 3DH5-Hop-PASS Appendix E: Hopping Channel Number Test Result TestMode Frequency[MHz] Result[Num] Limit[Num] Verdict DH5 Hop 79 ≥15 PASS 2DH5 Hop 79 ≥15 PASS 3DH5 Hop 79 ≥15 PASS Test Graphs DH5-Hop-PASS 2DH5-Hop-PASS 3DH5-Hop-PASS Appendix F: Dwell Time Test Result TestMode Frequency[MHz] BurstWidth [ms] TotalHops [Num] Result[s] Limit[s] Verdict DH1 Hop 0.373 320 0.119 ≤0.4 PASS DH3 Hop 1.620 160 0.259 ≤0.4 PASS DH5 Hop 2.862 110 0.315 ≤0.4 PASS 2DH1 Hop 0.376 320 0.12 ≤0.4 PASS 2DH3 Hop 1.620 160 0.259 ≤0.4 PASS 2DH5 Hop 2.863 110 0.315 ≤0.4 PASS 3DH1 Hop 0.376 320 0.12 ≤0.4 PASS 3DH3 Hop 1.620 160 0.259 ≤0.4 PASS 3DH5 Hop 2.864 110 0.315 ≤0.4 PASS Test Graphs DH1-Hop-PASS DH3-Hop-PASS DH5-Hop-PASS 2DH1-Hop-PASS 2DH3-Hop-PASS 2DH5-Hop-PASS 3DH1-Hop-PASS 3DH3-Hop-PASS 3DH5-Hop-PASS Appendix G: Duty Cycle Correction Factor (DCCF) Test Result TestMode Frequency[MHz] ON Time [ms] Single Period [ms] Duty Cycle [%] Duty Cycle Factor[dB] Period [ms] Burst Quantity DCCF [dB] DH5 2441 2.88 3.75 76.80 1.15 100 1 -30.81 2DH5 2441 2.88 3.75 76.80 1.15 100 1 -30.81 3DH5 2441 2.88 3.75 76.80 1.15 100 1 -30.81 DCCF=20 * Log(duty cycle) = 20 * Log(T on time / T period ) Test Graphs NTNV-DH5-2441(T on time for single burst) NTNV-2DH5-2441(T on time for single burst) NTNV-3DH5-2441(T on time for single burst) NTNV-DH5-2441(Burst Quantity) NTNV-2DH5-2441(Burst Quantity) NTNV-3DH5-2441(Burst Quantity) Appendix H: Band edge and Spurious Emission(Conducted) Test Graphs DH5-2402-PASS DH5-2480-PASS DH5-Hop_2402-PASS DH5-Hop_2480-PASS 2DH5-2402-PASS 2DH5-2480-PASS 2DH5-Hop_2402-PASS 2DH5-Hop_2480-PASS 3DH5-2402-PASS 3DH5-2480-PASS 3DH5-Hop_2402-PASS 3DH5-Hop_2480-PASS DH5-2402-0~Reference-PASS DH5-2402-30~1000-PASS DH5-2402-1000~26500-PASS DH5-2441-0~Reference-PASS DH5-2441-30~1000-PASS DH5-2441-1000~26500-PASS DH5-2480-0~Reference-PASS DH5-2480-30~1000-PASS DH5-2480-1000~26500-PASS 2DH5-2402-0~Reference-PASS 2DH5-2402-30~1000-PASS 2DH5-2402-1000~26500-PASS 2DH5-2441-0~Reference-PASS 2DH5-2441-30~1000-PASS 2DH5-2441-1000~26500-PASS 2DH5-2480-0~Reference-PASS 2DH5-2480-30~1000-PASS 2DH5-2480-1000~26500-PASS 3DH5-2402-0~Reference-PASS 3DH5-2402-30~1000-PASS 3DH5-2402-1000~26500-PASS 3DH5-2441-0~Reference-PASS 3DH5-2441-30~1000-PASS 3DH5-2441-1000~26500-PASS 3DH5-2480-0~Reference-PASS 3DH5-2480-30~1000-PASS 3DH5-2480-1000~26500-PASS --------End of Report--------

TEST REPORT For Bluetooth-EDR Report No......................................... : CHTW26075051 Project No ........................................ : SHT2606033403W FCC ID ............................................. : 2A3NOCZ-B801 Applicant’s name ............................. : ZHENGZHOU YSAIR TECHNOLOGY CO.,LTD Address ............................................ : Room 2101, 21st Floor of B Block, Silicon Valley Plaza, 82 Culture Street,Jinshui District,Zhengzhou City,Henan Province, China Product Name .................................. : Hearing Aids Trade Mark....................................... : RETEKESS Model No.......................................... : CZ-B801 Listed Model(s) ................................ : TE102 Standard .......................................... : FCC CFR Title 47 Part 15 Subpart C § 15.247 Date of receipt of test sample..........: 2026/6/10 Date of testing.............................: 2026/6/10- 2026/7/29 Date of issue...............................: 2026/7/30 Result ................... ........................: Pass Compiled by (Position+Printed name+Signature) : File administrator Xiaodong Zhao Supervised by (Position+Printed name+Signature) : Project Engineer Kiki Kong Approved by (Position+Printed name+Signature) : RF Manager Xu Yang Testing Laboratory Name ............. : Shenzhen Huatongwei International Inspection Co., Ltd. Address ............................................ : Building 7, Baiwang Idea Factory, No.1051, Songbai Road, Yangguang Community, Xili Subdistrict, Nanshan District, Shenzhen, Guangdong, China Test Report Form No. ........................ : R0066 Test Report Form(s) Originator ......... : Shenzhen Huatongwei International Inspection Co., Ltd. Master TRF ........................................ : Dated 2025-07 Shenzhen Huatongwei International Inspection Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Huatongwei International Inspection Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen Huatongwei International Inspection 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.The test report merely correspond to the test sample.The authenticity of this Test Report and its contents can be verified by contacting the Laboratory, responsible for this Test Report. Report No.: CHTW26075051 Page 2 of 43 Contents 1. TEST S T AN D AR D S A N D R E P O R T V E R S I O N 3 1.1. Test Standards 3 1.2. Report version 3 2. TEST DESCRIPTION 4 3. SUMMARY 5 3.1. Client Information 5 3.2. Product Description 5 3.3. Radio Specification Description 5 3.4. Testing Laboratory Information 6 4. TEST CONFIGURATION 7 4.1. Test frequency list 7 4.2. Descriptions of Test mode 7 4.3. Test mode 7 4.4. Test sample information 8 4.5. Support unit used in test configuration and system 8 4.6. Testing environmental condition 8 4.7. Statement of the measurement uncertainty 9 4.8. Equipment Used during the Test 10 5. TEST CONDITIONS AND RESULTS 12 5.1. Antenna Requirement 12 5.2. AC Conducted Emission 13 5.3. Peak Output Power 15 5.4. 20 dB Bandwidth 16 5.5. 99% Occupied Bandwidth 17 5.6. Carrier Frequencies Separation 18 5.7. Hopping Channel Number 19 5.8. Dwell Time 20 5.9. Duty Cycle Correction Factor (DCCF) 21 5.10. Pseudorandom Frequency Hopping Sequence 22 5.11. Conducted Band edge and Spurious Emission 23 5.12. Radiated Band edge Emission 24 5.13. Radiated Spurious Emission 26 6. TEST SETUP PHOTOS 33 7. EXTERNAL AND INTERNAL PHOTOS 36 7.1. External Photos 36 7.2. Internal Photos 38 8. APPENDIX REPORT 43 Report No.: CHTW26075051 Page 3 of 43 1. TEST STAND ARDS AND REPORT VERSION 1.1. Test Standards The tests were performed according to following standards: ‒ FCC CFR Title 47 Part 15 Subpart C § 15.247: Operation within the bands 902-928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz ‒ ANSI C63.10:2020: American National Standard for Testing Unlicensed Wireless Devices ‒ KDB 558074 D01 15.247 Meas Guidance v05r02: Guidance for Compliance Measurements on Digital Transmission System, Frequency Hopping Spread Spectrum System, and Hybrid System Devices Operating under Section 15.247 of The FCC Rules 1.2. Report version Revision No. Date of issue Description N/A 2026-07-30 Original Report No.: CHTW26075051 Page 4 of 43 2. TEST DESCRIPTION Report clause Test Items Standard Requirement Result Test Engineer 5.1 Antenna Requirement 15.203/15.247 (c) PASS Jiaxing Si 5.2 AC Conducted Emission 15.207 PASS YATING.CHEN 5.3 Peak Output Power 15.247 (b)(1) PASS Jiaxing Si 5.4 20 dB Bandwidth 15.247 (a)(1) PASS Jiaxing Si 5.5 99% Occupied Bandwidth - PASS *1 Jiaxing Si 5.6 Carrier Frequency Separation 15.247 (a)(1) PASS Jiaxing Si 5.7 Hopping Channel Number 15.247 (a)(1) PASS Jiaxing Si 5.8 Dwell Time 15.247 (a)(1) PASS Jiaxing Si 5.9 Duty Cycle Correction Factor - PASS *1 Jiaxing Si 5.10 Pseudorandom Frequency Hopping Sequence 15.247(b)(4) PASS Jiaxing Si 5.11 Conducted Band Edge and Spurious Emission 15.247(d)/15.205 PASS Jiaxing Si 5.12 Radiated Band Edge Emission 15.205/15.209 PASS Junxu Lin 5.13 Radiated Spurious Emission 15.247(d)/15.205/15.209 PASS XIAOHANG.ZHOU Junxu Lin Note: ‒ The measurement uncertainty is not included in the test result. ‒ *1: No requirement on standard, only report these test data. Report No.: CHTW26075051 Page 5 of 43 3. SUMMARY 3.1. Client Information Applicant: ZHENGZHOU YSAIR TECHNOLOGY CO.,LTD Address: Room 2101, 21st Floor of B Block, Silicon Valley Plaza, 82 Culture Street,Jinshui District,Zhengzhou City,Henan Province, China Manufacturer: HONG KONG RETEKESS CO.,LIMITED Address: FLAT/RM 1019B 10/F LIVEN HOUSE NO.61-63 KING YIP STREET KWUN TONG KL Factory: Cemho Medical Technology (Guangdong) Co., Ltd. Address: Cemho Medical Industrial Park, West of Xinghe Line, Dongguan Shijie (Xingning) Industr…

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Page1 RFShenzhenShuanghuaxinTechnologyCo.,Ltd. AntennaCertificationCertificate Antennaspecificationforapproval Customername CemhoMedicalTechnology(Guangdong)Co., Ltd. Model CZ-B801 Antennaband BT2.4G Antennatype FPC Antenna material electrolyticcopper FPCcolor black Material number SHX-B801-V1 ManufacturerConfirmation Signature Barenacceptedthesignature CustomerConfirmation Signature Clientacknowledgessignature structurepurchase QualityControlQC structure radiofrequency engineering examineandverify Toexamine QualityControlQC date SealArea date SealArea Phone:13622369605 RFShenzhenShuanghuaxinTechnologyCo.,Ltd. Phone:13622369605 Page2 catalogue 1.SupportedEquipment&TestableAntennaTypes....................................1 II:Overview.....................................................................2 3:Matchthecircuitdiagram,machineimage,and antennaimage....................................................................3 4:AntennaStandingWaveRatio&Antenna Efficiency(VSWR)....................................................4 5:StructuralDrawings......................................................................6 RFShenzhenShuanghuaxinTechnologyCo.,Ltd. 1.SupportedEquipment&TestableAntennaTypes Phone:13622369605 Page3 RFShenzhenShuanghuaxinTechnologyCo.,Ltd. II:Overview Phone:13622369605 Page4 (1)Antennaperformance 1.ThisapprovalsheetsupportsforMIDproject.FPCantennasincludeinthisproject.This reportisfortheperformanceofBTantenna. 2.Antennashapesize：MeettherequirementofMID 3.Antennaband：2400MHz~2500MHz 4.Antennamaterial：AntennamaterialmeettherequirementofMID 5.Adhesiveperformance：AdhesiveperformancemeettherequirementofMID 6.Antennaperformancemeetthespecbelow： Description BT2.4 Units VSWR ≤3.0 ≥ 3 Antenna Gain 1.07 dBi Antenna Efficiency 0 % FeedImpedance50ohms OperatingTemperature-40to+85degC Polarization/AzimuthLinear/Omni-directional (2)MechanicalInformation MechanicalDimension CableLength NA DescriptionBT2.4 Material FPC CoaxialCable NA Environmental OperationTemperature-40to+85degC StorageTemperature-40to+85degC RFShenzhenShuanghuaxinTechnologyCo.,Ltd. Three:Matchthecircuitdiagram,machineimage,and antenna3Dimage Phone:13622369605 Page5 (1)MatchingCircuit NA NA (2)Machineimage&Antenna2Dimage NA RF NANA NANA RFShenzhenShuanghuaxinTechnologyCo.,Ltd. Three:Matchthecircuitdiagram,machineimage,and antenna3Dimage Phone:13622369605 Page5 1:Gold-finishedsurface;3:Blackmatteinkcoating;4:Complieswithlatestenvironmentalstandards (RoHS&REACH); RFShenzhenShuanghuaxinTechnologyCo.,Ltd. IV:BT2.40G–2.48G(VSWR) Phone:13622369605 Page6 Frequency(MHz) VSWR 24001.7 24401.3 24801.4 5:StructuralDrawings

Appendix E: DAE and Probe Calibration Certificate 10 of 12 Appendix E: DAE and Probe Calibration Certificate 11 of 12 Appendix E: DAE and Probe Calibration Certificate 12 of 12 Appendix F: Dipole Calibration Certificate 1 of 7 1.1. D2450V2 Dipole Calibration Certificate Appendix F: Dipole Calibration Certificate 2 of 7 Appendix F: Dipole Calibration Certificate 3 of 7 Appendix F: Dipole Calibration Certificate 4 of 7 Appendix F: Dipole Calibration Certificate 5 of 7 Appendix F: Dipole Calibration Certificate 6 of 7 Appendix F: Dipole Calibration Certificate 7 of 7 Extended Dipole Calibrations Referring to KDB865664 D01, if dipoles are verified in return loss (<-20dB, within 20% of prior calibration), and in impedance (within 5 ohm of prior calibration), the annual calibration is not necessary and the calibration interval can be extended. Head-2450 Date of measurement Return-loss (dB) Delta (%) Real Impedance (ohm) Delta (ohm) Imaginary impedance (ohm) Delta (ohm) 2023-12-06 -27.4 51.6 4.03 2024-12-02 -27.7 1.09 52.5 0.9 4.33 0.3 2025-12-01 -26.9 1.82 50.8 0.8 4.21 0.18 The return loss is <-20dB, within 20% of prior calibration; the impedance is within 5ohm of prior calibration. Therefore the verification result should support extended calibration.

TEST REPORT For SAR Report No......................................... : CHTW26085009 Project No ........................................ : SHT2606033402W FCC ID ............................................. : 2A3NOCZ-B801 Applicant’s name ............................. : ZHENGZHOU YSAIR TECHNOLOGY CO.,LTD Address ............................................ : Room 2101, 21st Floor of B Block, Silicon Valley Plaza, 82 Culture Street,Jinshui District,Zhengzhou City,Henan Province, China Product Name .................................. : Hearing Aids Trade Mark....................................... : RETEKESS Model No.......................................... : CZ-B801 Listed Model(s) ................................ : TE102 Standard .......................................... : FCC 47 CFR Part2.1093 ANSI/IEEE Std C95.1-1992 IEEE Std 1528-2013 Date of receipt of test sample..........: 2026/6/10 Date of testing.............................: 2026/8/7 Date of issue...............................: 2026/8/11 Result ................... ........................: PASS Compiled by (Position+Printed name+Signature) : File administrator Caspar Chen Supervised by (Position+Printed name+Signature) : Project Engineer Xiaodong Zhao Approved by (Position+Printed name+Signature) : RF Manager Xu Yang Testing Laboratory Name ............. : Shenzhen Huatongwei International Inspection Co., Ltd. Address ............................................ : Building 7, Baiwang Idea Factory, No.1051, Songbai Road, Yangguang Community, Xili Subdistrict, Nanshan District, Shenzhen, Guangdong, China Test Report Form No. ........................ : R0066 Test Report Form(s) Originator ......... : Shenzhen Huatongwei International Inspection Co., Ltd. Master TRF ........................................ : Dated 2025-07 Shenzhen Huatongwei International Inspection Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Huatongwei International Inspection Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen Huatongwei International Inspection 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.The test report merely correspond to the test sample.The authenticity of this Test Report and its contents can be verified by contacting the Laboratory, responsible for this Test Report. Report No.: CHTW26085009 Page 2 of 27 Contents 1. Statement of Compliance 3 2. Test Standards and Report version 4 2.1. Test Standards 4 2.2. Report version 4 3. Summary 5 3.1. Client Information 5 3.2. Product Description 5 3.3. Radio Specification Description 5 3.4. Testing Laboratory Information 6 3.5. Environmental conditions 6 4. Equipments Used during the Test 7 5. Measurement Uncertainty 8 6. SAR Measurements System Configuration 9 6.1. SAR Measurement Set-up 9 6.2. DASY5 E-field Probe System 10 6.3. Phantoms 11 6.4. Device Holder 11 7. SAR Test Procedure 12 7.1. Scanning Procedure 12 7.2. Data Storage and Evaluation 14 8. Dielectric Property Measurements & System Check 16 8.1. Tissue Dielectric Parameters 16 8.2. SAR System Validation 17 8.3. System Check 17 9. SAR Exposure Limits 20 10. Antenna Location 21 11. Power Measurement Results and Tune-up 22 12. SAR Measurement Results 23 13. Test Setup Photos 24 14. External Photos of the EUT 27 Report No.: CHTW26085009 Page 3 of 27 1. Statement of Compliance Maximum Reported SAR (W/kg @1g) RF Exposure Conditions Bluetooth Head(Dist.= 0mm) 0.793 Note: 1. This device is in compliance with Specific Absorption Rate (SAR) for general population/uncontrolled exposure limits specified in FCC 47 CFR part 2 (2.1093) and IEEE Std C95.1. 2. This device had been tested in accordance with the measurement methods and procedures specified in IEEE 1528 and FCC KDB publications. Report No.: CHTW26085009 Page 4 of 27 2. Test Standards and Report version 2.1. Test Standards The tests were performed according to following standards: FCC 47 Part 2.1093: Radiofrequency Radiation Exposure Evaluation:Portable Devices ANSI/IEEE C95.1-1992: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz IEEE Std 1528-2013: IEEE Recommended Practice for Determining the Peak Spatial-Average Specific Absorption Rate (SAR) in the Human Head from Wireless Communications Devices: Measurement Techniques. FCC published RF exposure KDB procedures: KDB 865664 D01 SAR Measurement 100 MHz to 6 GHz v01r04: SAR Measurement Requirements for 100 MHz to 6 GHz KDB 865664 D02 RF Exposure Reporting v01r02: RF Exposure Compliance Reporting and Documentation Considerations KDB 447498 D04 Interim General RF Exposure Guidance v01: Mobile and Portable Device RF Exposure Procedures and Equipment Authorization Policies TCB workshop: April, 2019; Page 19, Tissue Simulating Liquids (TSL) 2.2. Report version Revision No. Date of issue Description N/A 2026-08-11 Original Report No.: CHTW26085009 Page 5 of 27 3. Summary 3.1. Client Information Applicant: ZHENGZHOU YSAIR TECHNOLOGY CO.,LTD Address: Room 2101, 21st Floor of B Block, Silicon Valley Plaza, 82 Culture Street,Jinshui District,Zhengzhou City,Henan Province, China Manufacturer: HONG KONG RETEKESS CO.,LIMITED Address: FLAT/RM 1019B 10/F LIVEN HOUSE NO.61-63 KING YIP STREET KWUN TONG KL Factory: Cemho Medical Technology (Guangdong) Co., Ltd. Address: Cemho Medical Industrial Park, West of Xinghe Line, Dongguan Shijie (Xingning) Industrial Transfer Industrial Park, Xingning, Meizhou, Guangdong, 514500, CHINA 3.2. Product Description Main unit Name of EUT: Hearing Aids Trade Mark: RETEKESS Model No.: CZ-B801 Listed Model(s): TE102 Power supply: DC 3.85V from battery Hardware version: V1.0 Software version: V1.0 Device Dimension: Length x Width x Thickness (mm): 30 x 15 x 15 Device Category: Portable Product st…

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ZHENGZHOUYSAIRTECHNOLOGYCO.,LTD 2.911(d)(5)(i)EquipmentTypeAttestationv1.2 Section2.911(d)(5)(i)Certification–EquipmentType Company:ZHENGZHOUYSAIRTECHNOLOGYCO.,LTD Address:Room2101,21stFloorofBBlock,SiliconValleyPlaza,82CultureStreet,Jinshui District,ZhengzhouCity,HenanProvince,China ProductName:HearingAids ModelNumber:CZ-B801,TE102 FCCIdentifier:2A3NOCZ-B801 2.911(d)(5)(i)EquipmentType We,[ZHENGZHOUYSAIRTECHNOLOGYCO.,LTD](“theapplicant”)certifythattheequipmentfor whichauthorizationissoughtthroughcertificationisnot: Name:WeidongShe Prohibitedfromreceivinganequipmentauthorizationpursuantto§2.903;oftheFCCrules. Identifiedasanequipmenttypeinthe“CoveredList” NOTE1 Yourssincerely, Signature: nDate:2026-08-13 TitleandCompanyname:GeneralManager/ZHENGZHOUYSAIRTECHNOLOGYCO.,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

The EUT is too small to fit in font size 4, so the FCC ID is reflected in the instruction manual The instruction manual is located on page 20

External Photos

ZHENGZHOUYSAIRTECHNOLOGYCO.,LTD OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:2026-08-13 Subject;RequestforConfidentiality FCCID:2A3NOCZ-B801 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthesedocuments mightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantageinthemarket. SchematicDiagram BlockDiagram OperationalDescription Name:WeidongShen Title:GeneralManage Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondenceduringthecertificationreviewprocesscannotbegrantedasconfidential documentsandthisinformationwillbeavailableforpublicreviewoncethegrantofequipment authorizationisissued. Sincerely, Signature: r

Differencesdeclaration Towhomconcern: OurcompanyZHENGZHOUYSAIRTECHNOLOGYCO.,LTD Herebydeclares: Multi-modeldifferencesareasfollows: Mainmodel: Listedmodel: MainModelNo.:CZ-B801 Schematicdiagram 电路原理图 PCBlayout PCB走线 Appearance 外观结构 Modelname 型号命名 Other 其它 SeriesModelNo.:TE102  ∆  Note: 1.Ifitisasame,markitas 如相同 , 则标识为  2.Ifthereisadifference,markitas∆;Iftherearedifferencesotherthanmodelnamedifferences, pleasedescribethemindetail 如有差异，则标注为 ∆; 除了型号命名差异外，如有其它差异则需要在下面详细描述 By: WeidongShen SignaturePrinted Title: Onbehalfof:ZHENGZHOUYSAIRTECHNOLOGYCO.,LTD

ZHENGZHOUYSAIRTECHNOLOGYCO.,LTD LetterofAuthorization Company:ZHENGZHOUYSAIRTECHNOLOGYCO.,LTD Address:Room2101,21stFloorofBBlock,SiliconValleyPlaza,82Culture Street,JinshuiDistrict,ZhengzhouCity,HenanProvince,China ProductName:HearingAids ModelNumber:CZ-B801,TE102 FCCIdentifier:2A3NOCZ-B801 Name:Weid…

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