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Shenzhen HTT Technology Co., Ltd. Report No.: HTT202604689 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 1 of 4 Product Name: B3 Model No.: B3 EUT Constructional Details External Photo Report No.: HTT202604689 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 2 of 4 Report No.: HTT202604689 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 3 of 4 Report No.: HTT202604689 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 4 of 4 ------End------

Label and Location Size: L: 3.0cm*W: 2.0cm Label and Location FCC ID : 2AXND-B3

Shenzhen HTT Technology Co., Ltd. Report No.: HTT202604689 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 1 of 3 Product Name: B3 Model No.: B3 EUT Constructional Details Internal Photo Report No.: HTT202604689 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 2 of 3 ANTENNA Report No.: HTT202604689 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 3 of 3 ------End------

Shenzhen HTT Technology Co., Ltd. Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 1 of 8 RF Exposure evaluation Report Reference No. ..................... : FCC ID............................................. : HTT202604689F02 2AXND-B3 Compiled by ( position+printed name+signature) . : File administrators Supervised by ( position+printed name+signature) . : Project Engineer Approved by ( position+printed name+signature) . : RF Manager Date of issue .................................... : Apr. 23, 2026 Testing Laboratory Name .............. : Shenzhen HTT Technology Co.,Ltd. Address ............................................ : 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao’an District, Shenzhen, Guangdong, China Applicant’s name ............................ : Shenzhen Biosled Technology Co., Ltd. Address ............................................ : Skyworth Innovation Valley 5D501 Building 1,Tangtou,Shiyan Street,Bao'an District, Shenzhen China Standard ........................................... : 47CFR §1.1310 47CFR §2.1093 KDB447498 D01 General RF Exposure Guidance v06 Shenzhen HTT Technology Co.,Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HTT Technology Co.,Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HTT Technology 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 ..................... : B3 Manufacturer .................................... : Shenzhen Biosled Technology Co., Ltd. Trade Mark ........................................ N/A Model/Type reference ...................... : B3 Rating ............................................... : DC 3.7V From battery and DC 5.0V From adapter Result ............................................... : PASS Report No.: HTT202604689F02 Page 2 of 8 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 2 of 8 T E S T R E P O R T Equipment under Test : B3 Model /Type : B3 Listed Models : B6,B7,B8,B9,BH-1,BH-2,BH-3,BH-4,BH-5,BH-6 Model difference : The PCB board, circuit, structure and internal of these models are the same, Only model number is different for these model. Applicant : Shenzhen Biosled Technology Co., Ltd. Address : Skyworth Innovation Valley 5D501 Building 1,Tangtou,Shiyan Street,Bao'an District, Shenzhen China Manufacturer : Shenzhen Biosled Technology Co., Ltd. Address : Skyworth Innovation Valley 5D501 Building 1,Tangtou,Shiyan Street,Bao'an District, Shenzhen China 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.: HTT202604689F02 Page 3 of 8 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 3 of 8 Contents 1 T E S T S T A N D A R D S ................................................... 4 2 S U M M A R Y .............................................................. 5 2.1 General Remarks 5 2.2 Product Description 5 2.3 Special Accessories 5 2.4 Modifications 5 3 T E S T E N V I R O N M E N T 6 3.1 Address of the test laboratory 6 3.2 Test Facility 6 3.3 Statement of the measurement uncertainty 6 4 T E S T L I M I T 7 4.1 Requirement 7 4.2 Conducted Power Results 8 4.3 Manufacturing tolerance 8 4.4 Evaluation Result 8 4.5 Simultaneous Transmission for SAR Exclusion 8 5 C O N C L U S I O N 8 Report No.: HTT202604689F02 Page 4 of 8 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 4 of 8 1 T E S T S T A N D A R D S The tests were performed according to following standards: ANSI C95.1–1999: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz. FCC KDB 447498 D01 General RF Exposure Guidance v06: Mobile and Portable Device, RF Exposure, Equipment Authorization Procedures. FCC CFR 47 part1 1.1310: Radiofrequency radiation exposure limits. FCC CFR 47 part2 2.1093: Radiofrequency radiation exposure evaluation: portable devices Report No.: HTT202604689F02 Page 5 of 8 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 5 of 8 2 S U M M A R Y 2.1 General Remarks Date of receipt of test sample : Apr. 15, 2026 Testing commenced on : Apr. 15, 2026 Testing concluded on : Apr. 23, 2026 2.2 Product Description Product Description: B3 Model/Type reference: B3 Power supply: DC 3.7V From battery and DC 5.0V From adapter Adapter Information (Auxiliary test provided by the lab): Testing sample ID： HTT202604689-1# (Engineer sample) HTT202604689-2# (Normal sample) Hardware version: / Software version: / Bluetooth BLE Supported type: Bluetooth low Energy Modulation: GFSK Operation frequency: 2402MHz to 2480MHz Channel number: 40 Channel separation: 2 MHz Bit Rate of Transmitter: 1Mbps Antenna type: PCB Antenna Antenna gain: 3.38 dBi 2.3 Special Accessories The following is the EUT test of the auxili…

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REPORT No.SZ19080340E01 TEST REPORT Applicant:SHANGHAI MOUNTAIN VIEW SILICON CO,. LTD PRODUCT NAME :MV_BP10xx PCB Antenna MODEL NAME :MV_BP10 TRADE NAME : MVSILICON BRAND NAME : MVSILICON STANDARD(S) : ANSI/IEEE Std 149-2008 RECEIPT DATE :2019-08-30 TEST DATE :2019-09-02 ISSUE DATE : 2019-09-03 Edited by: Chi Shide(Rapporteur) Approved by: Andy Yeh(Technical Director) NOTE: This document is issued by MORLAB, the test report shall not be reproduced except in full without prior written permission of the company. The test results apply only to the particular sample(s) tested and to the specific tests carried out which is available on request for validation and information confirmed at our website. MORLAB SHENZHEN MORLAB COMMUNICATIONS TECHNOLOGY Co., Ltd. FL1-3, Building A, FeiYang Science Park, No.8 LongChang Road, Block67, BaoAn District, ShenZhen , GuangDong Province, P. R. China Tel: 86-755-36698555Fax: 86-755-36698525 Http://www.morlab.cn E-mail: [email protected] Page 1 of 14 REPORT No.SZ19080340E01 SHENZHEN MORLAB COMMUNICATIONS TECHNOLOGY Co., Ltd. FL1-3, Building A, FeiYang Science Park, No.8 LongChang Road, Block67, BaoAn District, ShenZhen , GuangDong Province, P. R. China MORLAB Tel: 86-755-36698555 Fax: 86-755-36698525 Http://www.morlab.cn E-mail: [email protected] Page 2of 14 DIRECTORY 1. Technical Information········································································································3 1.1. Manufacturer and Factory Information ········································································ 3 1.2. Equipment Under Test (EUT) Description ···································································3 2. Test Results ························································································································ 4 2.1. Applied Reference Documents ····················································································· 4 2.2. Test Conditions ··············································································································· 4 2.3. Test Results lists············································································································· 4 Annex A Photographs ··········································································································· 6 Annex B Figures ···················································································································· 7 1. 2D Radiation Pattern ········································································································· 7 2. 3D Radiation Pattern ········································································································· 9 3. Return Loss ······················································································································ 10 4. VSWR································································································································· 11 5. Input Impedance ·············································································································· 11 Annex C Photographs········································································································· 12 Annex D General Information ···························································································· 14 1.1 Identification of the Responsible Testing Laboratory ············································· 14 1.2 Identification of the Responsible Testing Location ················································· 14 1.3 Test Equipments Utilized ····························································································· 14 Change History Issue DateReason for change 1.0 2019-09-03 First edition REPORT No.SZ19080340E01 SHENZHEN MORLAB COMMUNICATIONS TECHNOLOGY Co., Ltd. FL1-3, Building A, FeiYang Science Park, No.8 LongChang Road, Block67, BaoAn District, ShenZhen , GuangDong Province, P. R. China MORLAB Tel: 86-755-36698555 Fax: 86-755-36698525 Http://www.morlab.cn E-mail: [email protected] Page 3of 14 1. Technical Information Note: Provide by manufacturer. 1.1.Manufacturer and Factory Information Applicant: SHANGHAI MOUNTAIN VIEW SILICON CO,. LTD Applicant Address:Suite 4C, Building 3, 1238 District, Shanghai, China Zhangjiang Road, Pudong New Manufacturer: SHANGHAI MOUNTAIN VIEW SILICON CO,. LTD Manufacturer Address:Suite 4C, Building 3, 1238 District, Shanghai, China Zhangjiang Road, Pudong New 1.2.Equipment Under Test (EUT) Description Wireless Type N/A FrequencyN/A REPORT No.SZ19080340E01 SHENZHEN MORLAB COMMUNICATIONS TECHNOLOGY Co., Ltd. FL1-3, Building A, FeiYang Science Park, No.8 LongChang Road, Block67, BaoAn District, ShenZhen , GuangDong Province, P. R. China MORLAB Tel: 86-755-36698555 Fax: 86-755-36698525 Http://www.morlab.cn E-mail: [email protected] Page 4of 14 2.Test Results 2.1. Applied Reference Documents Leading reference documents for testing: No. Identity Document Title 1 ANSI/IEEE Std 149-2008 IEEE Standard Test Procedures for Antennas 2.2.Test Conditions Test Environment Conditions Relative Humidity:25 ... 75 % Temperature:+10 °C to +30 °C 2.3. Test Results lists 2.3.1. Gain Frequency Gain(dBi) 2400MHz 2.81 2410MHz 2.74 2420MHz3.38 2430MHz2.73 2440MHz 1.01 2450MHz 1.26 2460MHz 1.50 2470MHz 1.49 2480MHz 1.42 2490MHz 0.36 2500MHz 0.33 REPORT No.SZ19080340E01 SHENZHEN MORLAB COMMUNICATIONS TECHNOLOGY Co., Ltd. FL1-3, Building A, FeiYang Science Park, No.8 LongChang Road, Block67, BaoAn District, ShenZhen , GuangDong Province, P. R. China MORLAB Tel: 86-755-36698555 Fax: 86-755-36698525 Http://www.morlab.cn E-mail: [email protected] Page 5of 14 2.3.2. Return Loss/VSWR/Input Impedance Frequency Return Loss (dB) VSWR Input 2400MHz-7.232.5325.37 2440MHz -6.47 2.80 17.99 2450MHz-6.222.9017.18 2480MHz -5.18 3.44 15.55 2500MHz -4.56 3.89 15.48 REPORT No.SZ19080340E01 SHENZHEN MORLAB COMMUNICATIONS TECHNOLOGY Co., Ltd. FL1-3, B…

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1 Appendix RF Test Data for BLE Company: : Shenzhen Biosled Technology Co., Ltd. EUT : B3 FCC ID: : 2AXND-B3 Model Number : B3 Report No. : HTT202604689F01 Reviewed By : Heber He 2 1. Duty Cycle 1.1 Test Result 1.1.1 Ant1 Ant1 Mode TX Type Frequency (MHz) T_on (ms) Period (ms) Duty Cycle (%) Duty Cycle Correction Factor (dB) Max. DC Variation (%) 1M SISO 2402 2.213 2.500 88.52 0.53 0.03 2440 2.214 2.500 88.56 0.53 0.00 2480 2.214 2.501 88.52 0.53 0.03 3 1.2 Test Graph 1.2.1 Ant1 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV 4 1M_HCH_2480MHz_Ant1_NTNV 5 2. Bandwidth 2.1 Test Result 2.1.1 OBW Mode TX Type Frequency (MHz) ANT 99% Occupied Bandwidth (MHz) Verdict Result Limit 1M SISO 2402 1 1.018 / Pass 2440 1 1.027 / Pass 2480 1 1.019 / Pass 2.1.2 6dB BW Mode TX Type Frequency (MHz) ANT 6dB Bandwidth (MHz) Verdict Result Limit 1M SISO 2402 1 0.667 >=0.5 Pass 2440 1 0.668 >=0.5 Pass 2480 1 0.669 >=0.5 Pass 6 2.2 Test Graph 2.2.1 OBW 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV 7 1M_HCH_2480MHz_Ant1_NTNV 8 2.2.2 6dB BW 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV 9 1M_HCH_2480MHz_Ant1_NTNV 10 3. Maximum Conducted Output Power 3.1 Test Result 3.1.1 Power Mode TX Type Frequency (MHz) Maximum Peak Conducted Output Power (dBm) Verdict ANT1 Limit 1M SISO 2402 1.84 <=30 Pass 2440 2.18 <=30 Pass 2480 0.41 <=30 Pass 11 4. Maximum Power Spectral Density 4.1 Test Result 4.1.1 PSD Mode TX Type Frequency (MHz) Maximum PSD (dBm) Verdict ANT1 Limit 1M SISO 2402 1.67 <=8 Pass 2440 1.97 <=8 Pass 2480 0.21 <=8 Pass 12 4.2 Test Graph 4.2.1 PSD 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV 13 1M_HCH_2480MHz_Ant1_NTNV 14 5. Unwanted Emissions In Non-restricted Frequency Bands 5.1 Test Result 5.1.1 Ref Mode TX Type Frequency (MHz) ANT Level of Reference (dBm) 1M SISO 2402 1 1.68 2440 1 1.98 2480 1 0.21 5.1.2 CSE Mode TX Type Frequency (MHz) ANT Level of Reference (dBm) Limit (dBm) Verdict 1M SISO 2402 1 1.68 -18.32 Pass 2440 1 1.98 -18.02 Pass 2480 1 0.21 -19.79 Pass 15 5.2 Test Graph 5.2.1 Ref 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV 16 1M_HCH_2480MHz_Ant1_NTNV 17 5.2.2 CSE 1M_LCH_2402MHz_Ant1_NTNV 1M_LCH_2402MHz_Ant1_NTNV 18 1M_MCH_2440MHz_Ant1_NTNV 1M_HCH_2480MHz_Ant1_NTNV 19 1M_HCH_2480MHz_Ant1_NTNV

Shenzhen HTT Technology Co., Ltd. Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China FCC PART 15 SUBPART C TEST REPORT FCC PART 15.247 Report Reference No. ...................: FCC ID. ......................................... : HTT202604689F01 2AXND-B3 Compiled by ( position+printed name+signature) : File administrators Supervised by ( position+printed name+signature) : Project Engineer Approved by ( position+printed name+signature) : RF Manager Date of issue ...................................: Apr. 23, 2026 Testing Laboratory Name .............: Shenzhen HTT Technology Co.,Ltd. Address ..........................................: 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao’an District, Shenzhen, Guangdong, China Applicant’s name...........................: Shenzhen Biosled Technology Co., Ltd. Address ...........................................: Skyworth Innovation Valley 5D501 Building 1,Tangtou,Shiyan Street,Bao'an District, Shenzhen China Test specification ......................... : Standard ..........................................: FCC Part 15.247 Shenzhen HTT Technology Co.,Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HTT Technology Co.,Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HTT Technology 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 ................ : B3 Trade Mark ......................................: N/A Manufacturer ...................................: Shenzhen Biosled Technology Co., Ltd. Model/Type reference .....................: B3 Listed Models ..................................: B6,B7,B8,B9,BH-1,BH-2,BH-3,BH-4,BH-5,BH-6 Modulation ......................................: GFSK Frequency ........................................ From 2402MHz to 2480MHz Ratings ............................................: DC 3.7V From battery and DC 5.0V From adapter Result ..............................................: PASS Report No.: HTT202604689F01 Page 2 of 36 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China T E S T R E P O R T Equipment under Test : B3 Model /Type : B3 Listed Models : B6,B7,B8,B9,BH-1,BH-2,BH-3,BH-4,BH-5,BH-6 Model difference : The PCB board, circuit, structure and internal of these models are the same, Only model number is different for these model. Applicant : Shenzhen Biosled Technology Co., Ltd. Address : Skyworth Innovation Valley 5D501 Building 1,Tangtou,Shiyan Street,Bao'an District, Shenzhen China Manufacturer : Shenzhen Biosled Technology Co., Ltd. Address : Skyworth Innovation Valley 5D501 Building 1,Tangtou,Shiyan Street,Bao'an District, Shenzhen China 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.: HTT202604689F01 Page 3 of 36 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Contents 1 TEST STANDARDS .......................................................................................................................................... 4 2 SUMMARY ........................................................................................................................................................ 5 2.1 General Remarks .................................................................................................................................... 5 2.2 Product Description ................................................................................................................................. 5 2.3 Equipment Under Test ............................................................................................................................ 5 2.4 Short description of the Equipment under Test (EUT) ............................................................................ 5 2.5 EUT configuration .................................................................................................................................... 5 2.6 EUT operation mode ............................................................................................................................... 5 2.7 Block Diagram of Test Setup .................................................................................................................. 6 2.8 Related Submittal(s) / Grant (s) .............................................................................................................. 6 2.9 Modifications ........................................................................................................................................... 6 3 TEST ENVIRONMENT ...................................................................................................................................... 7 3.1 Address of the test laboratory ................................................................................................................. 7 3.2 Test Facility ............................................................................................................................................. 7 3.3 Environmental conditions ...........................................................................................…

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Shenzhen HTT Technology Co., Ltd. Report No.: HTT202604689 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 1 of 2 Product Name: B3 Model No.: B3 Test Setup Photo Radiated Emission Report No.: HTT202604689 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 2 of 2 Conducted Emission RF Test ------End------