2AU4M-HR50HEART RATE MONITOR

HR50 Heart Rate Monitor User Manual Wuhan Qiwu Technology Co., Ltd. PRODUCT INTRODUCTION HR50 is a heart rate monitor. With iGPSPORT chest strap, it can provide accurate heart rate monitoring. HR50 supports heart rate transmission via ANT+ and Bluetooth protocols. It can be used with compatible GPS bike computers, sports watches and apps. You can view this user manual through iGPSPORTAPP or www.igpsport.com. Heart Rate Monitor Chest Strap IN THE BOX  HR50 Heart Rate Monitor ×1  Chest Strap×1  CR2032 Battery×1（pre-installed in the HRM）  Quick Start Manual×1 WEARING THE HEART RATE MONITOR 1. Wet the two electrode areas on the back of the chest strap; 2. Install the heart rate monitor on the metal buckle of the chest strap with the iGPSPORT logo facing up; 3. Wrap the strap around your chest, with the electrodes contacting your skin, then connect the hook to the loop; 4. Adjust the strap to fit your chest and keep the heart rate monitor right below the center of your chest, ensuring comfortable wearing without slipping. Note:Please remove the protective film of the heart rate monitor before using. Inaccurate heart rate will be caused if wear the strap too loose. INDICATOR LIGHTS Once the heart rate monitor is correctly worn, it will power on automatically with the LED indicator light illuminating. Upon finishing the exercise and removing the heart rate monitor, the device will enter sleep mode automatically.  No heart rate reading: Red light flashes  Heart rate reading: Green light flashes (the indicator light flashes 6 times and then automatically turns off, while the HRM remains working) CONNECTING WITH YOUR DEVICE 1. Please wear the heart rate monitor first to connect with compatible devices; 2. When pairing, please keep the HR50 and the pairing device within 3 meters. Connections through ANT+ or Bluetooth are supported; Note: Only one Bluetooth device or APP is supported when connecting through Bluetooth. REPLACING THE BATTERY 1. Use a coin-shaped tool to rotate the battery cover counterclockwise by 90 degrees, moving the arrow on the battery cover from the locked position to the open position to remove the battery cover. 2. When installing a new CR2032 battery, ensure the positive side of the battery which with the mark “+” faces upward. Place the battery cover back onto the heart rate monitor, aligning the arrow on the battery cover with the open position. Then, use a tool to rotate the battery cover clockwise by 90 degrees, moving the arrow on the battery cover from the open position to the locked position to complete the installation. MAINTENANCE Please follow the maintenance instructions to ensure the normal use of the heart rate monitor. After each use, please remove the heart rate monitor from chest strap and wipe it with a soft towel. Please rinse it with 25°C clean water, wipe with a soft towel and hang or lay it flat to air dry naturally Attention! Do not use cleaners, fabric softeners, bleach, alcohol, or other chemicals to clean the chest strap. Do not wash the chest strap in a washing machine or use a dryer. Do not soak, dry clean, iron, or bleach the chest strap. The lifespan of the chest strap decreases with use. If it is damaged, please replace it with a new one. SPECIFICATIONS Appearance Device Material Plastic Color Black and white Device Size 64*34*10.1mm Weight 18g of heart rate monitor(with battery), 30g of chest strap Battery Model CR2032*1 Capacity 240mAh Battery Life 1 year with daily use of 1 hour Chest Strap Material Nylon and spandex chest strap, metal hook Length 95cm Heart Rate Monitoring Range 30-240 bpm Wireless Connection ANT+ & BLE ； BLE supports connecting to only one device at a time Waterproof IPX7 Indicator Lights Red and green LED indicators Wearing Position Chest Using Scenario Cycling and running Compatible Third-party Apps XOSS, BlackbirdSport, Joyrun, Runtopia, Keep, Zwift, Nike Run Club DISCLAIMER This manual is for user’s reference only. If there is any differences between it and the device, please subject to the device. We reserve the rights to change or improve our products and to make changes in the content of this manual without the obligation to notify any person or organization of such changes and improvements. All rights reserved to Wuhan Qiwu Technology Co.,Ltd. CONTACT US Official Website：www.igpsport.com Manufacturer: Wuhan Qiwu Technology Co., Ltd. Address: 3rd Floor, Building 04, Creative World Zone D, No.16 West Yezhihu Road, Hongshan District, Wuhan City, Hubei Province, China Telephone: 027-87835568 E-mail: [email protected] Warning: 1.CAUTION: RISK OF EXPLOSION IF BATTERY IS REPLACED BYAN INCORRECTTYPE. DISPOSE OF USED BATTERIES ACCORDINGTO THE INSTRUCTIONS. 2.Operation temperature:0~40ºC. 3.Battery: 3V EU Declaration of Conformity We, Wuhan Qiwu Technology Co.,Ltd.(3 / F, Creative workshop, No.04, District D, Creative world, No.16 Yezhihu West Road, Hongshan District, Wuhan City, Hubei Province, China.) hereby declares that this HEART RATE MONITOR is in compliance with the essential requirements and other relevant provisions of Directive 2014/53/EU. According to Article 10(2) of Directive 2014/53/EU, the HEART RATE MONITOR can be used in Europe without restriction. FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This device and its antenna(s) must not be co-located or operating in conjunction with any other antenna or transmitter. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection …

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Wuhan Qiwu Technology Co.,Ltd. U.S. Agent Letter of Attestation To: Federal Communications Commission 7435 Oakland Mills Road, Columbia, MD 21046, USA Date: 3/25/2025 Ref: Attestation Statement – Part2.911(d)(7) filing FCC ID: 2AU4M-HR50 Wuhan Qiwu Technology Co.,Ltd. (“the applicant”) certifies that, as of the date of the filing of the application, THREE STONES MEDIA LLC(“the agent”) is our designated U.S. agent for service of process for the above reference FCC ID. The applicant accepts to maintain an agent for service of process in the United States forno less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. The applicant further acknowledges it is our responsibility to inform the FCC whenever the agent information changes. THREE STONES MEDIA LLC ("the agent) understand it is the agent's obligation to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address. Designated U.S. Agent Company Name: THREE STONES MEDIA LLC FRN: 0033401761 GC: 2A99E Address: 912 Bailey Ln, Mansfield, TX76063 Signature: Contact Person: Sijie Zhang Tel: (215) 313 0685 Email: [email protected] Applicant Company Name: Wuhan Qiwu Technology Co.,Ltd. Address: 3 / F, Creative workshop, No.04, District D, Creative world, No.16 Yezhihu West Road, Hongshan District, Wuhan City, Hubei Province, China Signature: Contact Person: Cai Li Tel: 027-87835568 Email: [email protected] FRN: 0028972917

Wuhan Qiwu Technology Co.,Ltd. Date: March 25, 2025 FCC ID: 2AU4M-HR50 Model Number:HR50, HR501, HR502, HR503 To: Federal Communication Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21048 To Whom It May Concern, We, Wuhan Qiwu Technology Co.,Ltd. declare that this EUT (FCC ID: 2AU4M-HR50) will conduct FCC compliance testing, the SDOC part recognized test lab(Shenzhen NTEK Testing Technology Co., Ltd.( ShenZhen Lab.). No. 24 Xinfa East Road, Xiangshan Community, Xinqiao Street, Baoan District, Shenzhen, Guangdong, People's Republic of China) Please contact me if you have any question. Sincerely, (Signed) Name / Title:cai Li/ manager Company: Wuhan Qiwu Technology Co.,Ltd. Address:3 / F, Creative workshop, No.04, District D, Creative world, No.16 Yezhihu West Road, Hongshan District, Wuhan City, Hubei Province, China.

Wuhan Qiwu Technology Co.,Ltd. 2025.03.24 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD21046 Ref: Attestation Statements Part 2.911(d) (5) (ii) Filing SUBJECT: FCC Application for FCC ID: (2AU4M-HR50) To Whom It May Concern: Wuhan Qiwu Technology Co.,Ltd. (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Sincerely, Signature: Print name:cai Li

Wuhan Qiwu Technology Co.,Ltd. 2025.03.24 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD21046 Ref: Attestation Statements Part 2.911(d) (5) (i) Filing SUBJECT: FCC Application for FCC ID: (2AU4M-HR50) To Whom It May Concern: Wuhan Qiwu Technology Co.,Ltd.(“the applicant”) certifies that the equipment forwhich authorization is sought is not “covered” equipment prohibited from receiving an equipmentauthorization pursuant to section 2.903 of the FCC rules. Sincerely, Signature: Print name:cai Li

<Wuhan Qiwu Technology Co.,Ltd. > Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 3/25/2025 Subject; Request for Confidentiality FCC ID:2AU4M-HR50 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Operational Description Tune up procedure BOM In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuantto KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name:cai Li Title:manager Email: [email protected]

\\172.16.20.5\ntek\NTEK\电磁兼容部\RF项目组\RF项目\2025\3月\S25030506502001 武汉齐物科技 心率带(BLE+ANT) HR50 FCC ID RF\6. Submission\Letter\FCC POA Letter.docx (Wuhan Qiwu Technology Co.,Ltd.) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Date: 3/25/2025 SUBJECT: FCC Application for FCC ID:2AU4M-HR50 To Whom It May Concern: We, the undersigned, hereby authorize Alex Li at Shenzhen NTEK Testing Technology Co., Ltd. on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Shenzhen NTEK Testing Technology Co., Ltd. on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Regards, (signature) (printed name): cai Li

Wuhan Qiwu Technology Co.,Ltd. Family models difference declaration Product Name: HEART RATE MONITOR Trade Name: iGPSPORT Model Name: HR50 Family Model: HR501, HR502, HR503 Difference declaration: All models are the same circuit and RF module, except for model names. We (Wuhan Qiwu Technology Co.,Ltd.) hereby state that all the models are electrical identical including the same software parameter and hardware design (i.e., circuit design, PCB Layout, RF module/circuit, antenna type(s) and antenna location, components on PCB, etc.), same mechanical structure and design (including product enclosure, materials, etc.), the only difference is the model name. Regards, Signature Name: Cai Li Date: 3/28/2025

ATTACHMENT PHOTOGRAPHS OF EXT Photo 1 Photo 2 Photo 3 Photo 4 Photo 5 Photo 6 Photo 7 Photo 8

ATTACHMENT PHOTOGRAPHS OF INT Photo 1 Photo 2 Photo 3 Photo 4 Photo 5 Photo 6 Photo 7 Photo 8 ANT

FCC ID: 2AU4M-HR50 Portable device According to §15.247(e)(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. According to KDB447498 D01 General RF Exposure Guidance V06 The 1-g SAR 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: • f(GHZ) is the RF channel transmit frequency in GHz • Power and distance are rounded to the nearest mW and mm before calculation • The result is rounded to one decimal place for comparison When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. BLE/ANT+: Antenna Type: PCB Antenna Antenna Gain: 2.1dBi Modulation Channel Freq. (GHz) Conduct ed power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculatio n 1g SAR Exclusion threshold SAR test exclusion 2.4020.211.050 0±111.259<50.390233.00YES 2.4400.121.028 0±111.259<50.393303.00YES 2.480-0.180.959 0±111.259<50.396513.00YES 2.4020.111.026 0±111.259<50.390233.00YES 2.440-0.050.989 0±111.259<50.393303.00YES 2.480-0.330.927 0±111.259<50.396513.00YES ANT+(1M) 2.457-0.240.810 0±111.259<50.394673.00YES ANT+(2M) 2.457-0.300.810 0±111.259<50.394673.00YES BLE(1M) BLE(2M) Note: This product does not support the requirements under multiple sources. Conclusion: For the max result : 0.39651≤ 3.0 for 1-g SAR, No SAR is required. Signature: Date: 2025-03-21 NAME AND TITLE (Please print or type): Alex /Manager COMPANY (Please print or type): No. 24 Xinfa East Road, Xiangshan Community, Xinqiao Street, Baoan District, Shenzhen, Guangdong, People's Republic of China

Report No.: S25030506502002 Version.1.3 Page 1 of 58 RADIO TEST REPORT FCC ID: 2AU4M-HR50 Product: HEART RATE MONITOR Trade Mark: iGPSPORT Model No.: HR50 Family Model: HR501, HR502, HR503 Report No.: S25030506502002 Issue Date: Mar. 21, 2025 Prepared for Wuhan Qiwu Technology Co.,Ltd. 3 / F, Creative workshop, No.04, District D, Creative world, No.16 Yezhihu West Road, Hongshan District, Wuhan City, Hubei Province, China. Prepared by Shenzhen NTEK Testing Technology Co., Ltd. No. 24 Xinfa East Road, Xiangshan Community, Xinqiao Street, Baoan District, Shenzhen, Guangdong, People's Republic of China Tel: 0755-2320 0050 Website: http://www.ntek.org.cn Report No.: S25030506502002 Version.1.3 Page 2 of 58 TABLE OF CONTENTS 1 TEST RESULT CERTIFICATION ...................................................................................................................... 3 2 SUMMARY OF TEST RESULTS ......................................................................................................................... 4 3 FACILITIES AND ACCREDITATIONS ............................................................................................................. 5 3.1 FACILITIES..................................................................................................................................................... 5 3.2 LABORATORY ACCREDITATIONS AND LISTINGS ................................................................................. 5 3.3 MEASUREMENT UNCERTAINTY ............................................................................................................... 5 4 GENERAL DESCRIPTION OF EUT .................................................................................................................. 6 5 DESCRIPTION OF TEST MODES ..................................................................................................................... 8 6 SETUP OF EQUIPMENT UNDER TEST ........................................................................................................... 9 6.1 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM ....................................................................... 9 6.2 SUPPORT EQUIPMENT ............................................................................................................................... 10 6.3 EQUIPMENTS LIST FOR ALL TEST ITEMS .............................................................................................. 11 7 TEST REQUIREMENTS .................................................................................................................................... 13 7.1 CONDUCTED EMISSIONS TEST ............................................................................................................... 13 7.2 RADIATED SPURIOUS EMISSION ............................................................................................................ 15 7.3 6DB BANDWIDTH ....................................................................................................................................... 24 7.4 DUTY CYCLE ............................................................................................................................................... 25 7.5 PEAK OUTPUT POWER .............................................................................................................................. 27 7.6 POWER SPECTRAL DENSITY ................................................................................................................... 28 7.7 CONDUCTED BAND EDGE MEASUREMENT......................................................................................... 30 7.8 SPURIOUS RF CONDUCTED EMISSIONS ................................................................................................ 31 7.9 ANTENNA APPLICATION .......................................................................................................................... 32 8 TEST RESULTS ................................................................................................................................................... 33 8.1 1M .................................................................................................................................................................. 33 8.2 2M .................................................................................................................................................................. 46 Report No.: S25030506502002 Version.1.3 Page 3 of 58 1 TEST RESULT CERTIFICATION Applicant’s name ......................... : Wuhan Qiwu Technology Co.,Ltd. Address ....................................... : 3 / F, Creative workshop, No.04, District D, Creative world, No.16 Yezhihu West Road, Hongshan District, Wuhan City, Hubei Province, China. Manufacturer's Name .................. : Wuhan Qiwu Technology Co.,Ltd. Address ....................................... : 3 / F, Creative workshop, No.04, District D, Creative world, No.16 Yezhihu West Road, Hongshan District, Wuhan City, Hubei Province, China. Product description Product name .............................. : HEART RATE MONITOR Trade Mark .................................. : iGPSPORT Model and/or type reference ..... : HR50 Family Model ............................... : HR501, HR502, HR503 Test Sample number ................... : S250305065002 Date of Test ................................. : Mar. 07, 2025 ~ Mar. 21, 2025 Measurement Procedure Used: APPLICABLE STANDARDS APPLICABLE STANDARD/ TEST PROCEDURE TEST RESULT FCC 47 CFR Part 2, Subpart J FCC 47 CFR Part 15, Subpart C KDB 174176 D01 Line Conducted FAQ v01r01 ANSI C63.10-2013 KDB 558074 D01 15.247 Meas Guidance v05r02 Complied This device described above has been tested by Shenzhen NTEK Testing Technology Co., Ltd., and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be repro…

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Report No.: S25030506502001 Version.1.3 Page 1 of 70 RADIO TEST REPORT FCC ID: 2AU4M-HR50 Product: HEART RATE MONITOR Trade Mark: iGPSPORT Model No.: HR50 Family Model: HR501, HR502, HR503 Report No.: S25030506502001 Issue Date: Mar. 21, 2025 Prepared for Wuhan Qiwu Technology Co.,Ltd. 3 / F, Creative workshop, No.04, District D, Creative world, No.16 Yezhihu West Road, Hongshan District, Wuhan City, Hubei Province, China. Prepared by Shenzhen NTEK Testing Technology Co., Ltd. No. 24 Xinfa East Road, Xiangshan Community, Xinqiao Street, Baoan District, Shenzhen, Guangdong, People's Republic of China Tel. 0755-2320 0050 Website: http://www.ntek.org.cn Report No.: S25030506502001 Version.1.3 Page 2 of 70 Table of Contents Page 1 TEST RESULT CERTIFICATION ...................................................................................................................... 3 2 SUMMARY OF TEST RESULTS ......................................................................................................................... 4 3 FACILITIES AND ACCREDITATIONS ............................................................................................................. 5 3.1 FACILITIES ..................................................................................................................................................... 5 3.2 LABORATORY ACCREDITATIONS AND LISTINGS ................................................................................. 5 3.3 MEASUREMENT UNCERTAINTY ............................................................................................................... 5 4 GENERAL DESCRIPTION OF EUT .................................................................................................................. 6 5 DESCRIPTION OF TEST MODES...................................................................................................................... 8 6 SETUP OF EQUIPMENT UNDER TEST ........................................................................................................... 9 6.1 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM ....................................................................... 9 6.2 SUPPORT EQUIPMENT ............................................................................................................................... 10 6.3 EQUIPMENTS LIST FOR ALL TEST ITEMS .............................................................................................. 11 7 TEST REQUIREMENTS .................................................................................................................................... 13 7.1 CONDUCTED EMISSIONS TEST ............................................................................................................... 13 7.2 RADIATED SPURIOUS EMISSION ............................................................................................................ 15 7.3 6DB BANDWIDTH ....................................................................................................................................... 24 7.4 DUTY CYCLE ............................................................................................................................................... 25 7.5 PEAK OUTPUT POWER .............................................................................................................................. 27 7.6 POWER SPECTRAL DENSITY ................................................................................................................... 28 7.7 CONDUCTED BAND EDGE MEASUREMENT ......................................................................................... 30 7.8 SPURIOUS RF CONDUCTED EMISSIONS ................................................................................................ 31 7.9 ANTENNA APPLICATION .......................................................................................................................... 32 8 TEST RESULTS ................................................................................................................................................... 33 8.1 BLE 1M .......................................................................................................................................................... 33 8.2 BLE 2M .......................................................................................................................................................... 52 Report No.: S25030506502001 Version.1.3 Page 3 of 70 1 TEST RESULT CERTIFICATION Applicant’s name ......................... : Wuhan Qiwu Technology Co.,Ltd. Address ....................................... : 3 / F, Creative workshop, No.04, District D, Creative world, No.16 Yezhihu West Road, Hongshan District, Wuhan City, Hubei Province, China. Manufacturer's Name .................. : Wuhan Qiwu Technology Co.,Ltd. Address ....................................... : 3 / F, Creative workshop, No.04, District D, Creative world, No.16 Yezhihu West Road, Hongshan District, Wuhan City, Hubei Province, China. Product description Product name .............................. : HEART RATE MONITOR Trade Mark .................................. : iGPSPORT Model and/or type reference ...... : HR50 Family Model ............................... : HR501, HR502, HR503 Test Sample number ................... : S250305065002 Date of Test ................................. : Mar. 07, 2025 ~ Mar. 21, 2025 Measurement Procedure Used: APPLICABLE STANDARDS APPLICABLE STANDARD/ TEST PROCEDURE TEST RESULT FCC 47 CFR Part 2, Subpart J FCC 47 CFR Part 15, Subpart C ANSI C63.10-2013 KDB 558074 D01 15.247 Meas Guidance v05r02 Complied This device described above has been tested by Shenzhen NTEK Testing Technology Co., Ltd., and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written…

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PCB onboard antenna: The matching is changed to the antenna incoming string 3.3nh, and then 2pf, the standing wave has been adjusted OK, and the darkroom 2.4G efficiency is 40-60% Manufacturer: Hubei Gongming Circuit Co., LTD

Radiated Measurement Photos