31% discount
Smart Bracelet, Wearable Activity & Fitness Tracker Band, 24H Sleep Tracker, All-Day Continuous Heart Rate Blood Pressure Stress HRV Monitor, 120+ Sport Modes Smart Wristband with Free APP 2 Bands
【120+ Sports Modes & All-Day Activity Tracking】Fitness tracker bracelet monitor your steps, distance and calories burned all the day to help you achieve your fitness goals more efficiently. Including 120 sports modes like skipping, swimming, yoga, basketball etc., and provides 3 GPS modes specifically for outdoor walking, running and cycling, you can view GPS movement trajectory on the map in real time on the APP.
£ 159.99
free delivery
28% discount
Garmin
Garmin
£ 362.28
free delivery
25% discount
COOSPO HW807 Armband Heart Rate Monitor, Bluetooth 5.0 & ANT+ Dual HRM with HR Zone Heart Rate Variability, Optical HR Sensor with IP67 for Peloton Strava Zwift DDP Yoga
CooSpo
£ 45.99
free delivery
24% discount
Garmin HRM-600, Premium Heart Rate Monitor, HRV data,Running Dynamics, Steps, Calories, Speed, Distance, Rechargeable battery,Record & sync data without a watch, machine washable strap, Size M-XL
Sends accurate real-time heart rate and HRV data to compatible Garmin smartwatches and cycling computers, fitness equipment, and apps
£ 149.99
free delivery
23% discount
Myzone MZ-3 Physical Activity Chest Strap Heart Rate Monitor - Fitness & Activity Tracker
MYZONE
£ 129.99
free delivery
22% discount
Wahoo Fitness TRACKR Herzfrequenz Brustgurt Größe XL
Wahoo Fitness
£ 21.91
free delivery
21% discount
Polar Pro Chest Strap - Heart Rate Monitor Belt
Polar
£ 50.43
free delivery
10% discount
OXFUZZ 3 Meter Waterproof Heart Rate Monitor Wireless Chest Strap Sport Watch Running Diving Watch with Back-light Alarm Clock - Black
OXFUZZ
£ 22.69
free delivery
10% discount
Polar H10 Heart Rate Monitor – ANT Plus, Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in memory, Software updates (H10, M-XXL,Grey)
Polar
£ 97.08
free delivery
9% discount
Frontier Heart Rate Monitor Chest Strap – Accurate HR Tracking with ZONE2 Training, Strain & Breathing Insights, Real-Time Alerts, Comfortable Wearable for Endurance Training, Running & Cycling
Frontier X
£ 218.90
free delivery
5% discount
Polar Verity Sense - Bracelet with Optical Pulse Sensor - ANT+ Dual Bluetooth - Pulse Sensor & Pro Chest Strap - Heart Rate Monitor Belt
Product 1: COMFORT: Polar Verity Sense keeps your wrist free for maximum comfort and freedom of movement. Just slip it on your upper or lower arm, clip it on your swimming goggles or place it snug and firm against your skin under tight-fitting clothing.
£ 121.46
free delivery
TwoNav - Arm Heart rate monitor
USB rechargeable battery.
free delivery
Garmin HRM-Fit Heart rate monitor purpose built for women
Garmin
£ 127.20
free delivery
Polar
Polar
free delivery
EZON Heart Rate Monitor for Men and Women Waterproof HR Sensor with Chest Strap
EZON
free delivery
Wahoo TICKR Heart Rate Monitor Chest Strap, Bluetooth, ANT+
CONNECT HEART RATE TO YOUR FAVORITE TRAINING APPS AND DEVICES - Proven technology delivers accurate heart rate and calories to the Wahoo Fitness and other popular training apps.
free delivery
2 Pack Heart Rate Monitor Chest Strap Replacement Compatible with Polar and Garmin Transmitters Soft Strap
Patelai
free delivery
Wahoo Fitness TRACKR Heart Rate Monitor
Wahoo Fitness
£ 82.77
free delivery
Polar Pro Chest Strap - Heart Rate Monitor Belt
Polar
free delivery
Polar H10 Heart Rate Sensor And Pro Chest Strap - Black, Medium/2X-Large
Polar
free delivery
Rich Green Valley Heart Rate Monitor Chest Strap Compatible with MYZONE MZ-3 Replacement Strap
Rich Green Valley
free delivery
Wahoo Fitness TRACKR Herzfrequenz Brustgurt Standardgröße
Wahoo Fitness
£ 20.51
free delivery
GEOID HS500 Heart Rate Monitor, Chest Strap, Heart Rate Monitor, Bluetooth 4.2/ANT+, IP67 Waterproof Heart Rate Sensor
GEOID
free delivery
Polar H10 Heart Rate Sensor for Equine with Handle Unisex Adult, Black, One Size
Polar
free delivery
Rich Green Valley Compatible with Myzone MZ-3 Strap and MZ-1 Chest Belt Heart Rate Monitor chest Straps Red Standard
COMPATIBLE WITH THE HEART RATE SENSORS: Chest strap works with the myzone MZ-3
free delivery
Garmin 010-11254-02 Replacement Soft Strap - Black, one size
Garmin
free delivery
EZON Heart Rate Monitor and Chest Strap, Exercise Heart Rate Monitor, Sports Watch with HRM, Waterproof, Stopwatch, Hourly Chime T007
EZON
free delivery
Aenllosi Hard Case for Polar H10 H9 Heart Rate Sensor/Monitor, Black | Also Fits Fitness Tracker/Chest Strap, EVA Hard Shell Protection, Shockproof Case Protection, Splash-Resistant Exterior
Aenllosi
free delivery
Polar
Polar
free delivery
Wahoo TICKR FIT Heart Rate Armband, Bluetooth, ANT+
Wahoo Fitness
free delivery
COOSPO H6 Heart Rate Monitor Chest Strap,Bluetooth ANT+ HRM,for Running Cycling Gym Sports
CooSpo
free delivery
Bryton Smart Heart Rate Monitor Chest Strap, Compatible with smartphone app and bike/cycling computer via Bluetooth & ANT+
Bryton
free delivery
CamKpell 3 Meter Waterproof Heart Rate Monitor Wireless Chest Strap Sport Watch Running Diving Watch with Back-light Alarm Clock - Black
CamKpell
free delivery
Magene H603 Chest Strap Heart Rate Monitor, ANT+ and Bluetooth Compatible with Split Adjustable Strap, iPhone & Android Compatible (Blue)
Magene
free delivery
Fitcent Heart Rate Monitor Chest Strap, Bluetooth ANT+ HR Sensor for Strava Peloton Polar Wahoo Zwift Map My Ride Garmin Sports Watches
ACCURATE AND PROFESSIONAL: Fitcent HRM provides top quality measurement for many pro athletes with training, the primary item HAS to be accurate is the heart rate, our HRM helps them to obtain accurate heart rate. Note: Please remember moisten the electrode area of the chest strap with water before wearing it.
free delivery
FITCENT Heart Rate Monitor Chest Replacement Strap Adjustable Soft Belt Compatible for Myzone MZ-3 MZ-1 (Not for Myzone Switch)
Fitcent
free delivery
Magene H603 Chest Strap Heart Rate Monitor, ANT+ and Bluetooth Compatible with Split Adjustable Strap, iPhone & Android Compatible
Magene
free delivery
Triamisu 3 Meter Waterproof Heart Rate Monitor Wireless Chest Strap Sport Watch Running Diving Watch with Back-light Alarm Clock - Black
Triamisu
free delivery
Magene H303 Herzfrequenzmesser, Herzfrequenz-Sensor-Brustgurt, Protokoll ANT+/Bluetooth, kompatibel mit IOS/Android-Apps
Magene
free delivery
Rich Green Valley Heart Rate Monitor Replacement Chest Strap Fits for Polar H7 H1 Wahoo Tickr Garmin Chest Belt
Rich Green Valley
free delivery
Polar H10 Heart Rate Monitor - ANT +, Bluetooth - Waterproof HR Sensor & Pro Chest Strap - Heart Rate Monitor Belt
Polar
free delivery
Rich Green Valley Heart Rate Monitor Replacement Chest Strap Compatible with Polar H10 H9 H7 H1 Wahoo Tickr Garmin Chest Belt
Adjustable size between M:24.8~36.6" inch /63~93 cm. The Wearable size is larger than the adjustable size,streching more than 1.2times
free delivery
Rich Green Valley Heart Rate Monitor Replacement Strap, Adjustable Chest Band Compatible with SUUNTO Smart Heart Rate Belt
Rich Green Valley
free delivery
Myzone Max & MZ-3 Heart Rate Monitors
MYZONE
free delivery
MYZONE
MYZONE
free delivery
Replacement Heart Rate Band – Heart Rate Monitor – Adjustable Chest Strap for Measuring Heart Rate Compatible with Polar, Garmin, Wahoo, Coospo
18" adjustable elastic strap between the two snaps. The tape has an overall length of 100 cm.
free delivery
Cardiosport TP5D Heart Rate Monitor Chest Strap for Running, Cycling: Dual Bluetooth & ANT+ Compatible with Zwift, Garmin, Strava, Wahoo, Polar, Rouvy, Peloton App
CARDIO sport
free delivery
Rich Green Valley Compatible with Polar H10 H9 H7 H1 Wahoo Tickr Garmin HRM Heart Rate Monitor Chest Strap,Black
Rich Green Valley
free delivery
COOSPO Heart Rate Monitors Armband Optical Heart Rate Sensor Bluetooth 4.0 ANT+ Compatible with iFit Polar Strava Wahoo Garmin Peloton
CooSpo
free delivery
Polar Vantage V Titan - Sports Watch with HRM H10 Chest Strap for Multisport and Triathlon Training with GPS, Heart Rate Monitor, Waterproof
Polar
free delivery
FITCENT Rechargeable Heart Rate Monitor Chest Strap, 5.3Khz Bluetooth ANT+ Heart Rate Chest for Peloton IFIT DDP Yoga Zwift Polar Garmin Wahoo
Fitcent
free delivery
iGPSPORT HR70 Armband Heart Rate Monitor, 65H Battery Life Wrist HRM Monitor, Bluetooth 5.0 & ANT, for Sports Running Cycling
iGPSPORT
free delivery
EMAY 6L Portable ECG Monitor | Record ECG and Heart Rate in 6 Channels | Compatible with Smartphone and PC | No Subscription Required
EMAY
free delivery
Magene H003 (H64 New Version) Heart Rate Monitor, Heart Rate Sensor Chest Strap, Protocol ANT+/Bluetooth, Compatible with iOS/Android APPs
Magene
free delivery
FITCENT Heart Rate Monitor Chest Replacement Strap Compatible with Polar H10 H9 H7, Adjustable Soft HR Belt Work for Polar Heart Rate Sensor (Black)
Heart Rate Monitor Replacement Soft Strap Works with Polar H7 H9 H10 & More /Works with Garmin Dual.
free delivery
JoyousMall Heart Rate Monitor with Chest Strap Sensor, HS500 Cycling Computer for Bike Training, ANT+ Wireless HRM for Fitness Running
JoyousMall
free delivery
iGPSPORT HR50 Bluetooth & Ant+ Heart Rate Monitor with Chest Strap for Running, Cycling, Gym and Compatible with Garmin Polar Wahoo - Black
Heart rate monitor provides ECG measurements to track real-time heart rate on your cycle computer and GPS watches via ANT+, smartphone or tablet with compatible workout apps via Bluetooth
free delivery
Biotricity Bioheart | 24/7 Continuous Heart Monitor | No Prescription Needed | Smart Wearable | Chest Strap | One Month Subscription Included (Medium)
CONTINUOUS 24/7 HEART MONITORING: Capture every heartbeat, anytime, anywhere. Unlike spot-check devices, Bioheart provides uninterrupted, medical-grade insights for complete peace of mind.
free delivery
iGPSPORT HR50 Heart Rate Monitor Chest Strap, Bluetooth ANT+ 1 Year Battery Life IPX7 Waterproof HRM Sensor, for Cycling Running Yoga Fitness Sports
iGPSPORT
free delivery
Powr Labs Heart Rate Monitor Chest Strap - ANT + Bluetooth Chest Heart Rate Monitor with Chest Strap - HRM Run Bike Cycling - Chest Strap Heart Monitor for Strava Zwift Wahoo Garmin Polar Peloton
Powr Labs
free delivery
COOSPO Heart Rate Monitor Chest Strap,Bluetooth ANT+ Chest HRM for Running Cycling Gym Fitness, Heart Rate Monitors IP67 Waterproof Compatible with Strava Zwift Wahoo Garmin Polar Peloton App
CooSpo
free delivery
Polar H9 XS-S Heart Rate Sensor Bluetooth & ANT+ | Fits 66–95 cm chest, Soft chest strap, Waterproof, Sports & fitness
POLAR presents a new affordable HRM when you're looking for a reliable high quality heart rate monitor for your everyday sports Polar H9 is a trusted choice of HR sensor that fulfills all your needs
free delivery
MYZONE
MYZONE
free delivery
Polar H9 XS-S Heart Rate Sensor Bluetooth & ANT+ | Fits 66–95 cm chest, Soft chest strap, Waterproof, Sports & fitness
Polar
free delivery
CARDIOSPORT Heart Rate Monitor Armband, Optical Heart Rate Sensor, Bluetooth ANT+ for Running, Cycling, Gym. Compatible with Strava, Zwift, Peloton, Garmin, Wahoo Apps
CARDIO sport
free delivery
COOSPO Heart Rate Monitor Chest Strap,Bluetooth ANT+ Chest HRM for Running Cycling Gym Fitness, Heart Rate Monitors IP67 Waterproof Compatible with Strava Zwift Wahoo Garmin Polar Peloton App
CooSpo
free delivery
Polar H10 Heart Rate Monitor - ANT +, Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in memory, Software updates - Works with Fitness apps, Cycling computers, Sports and Smart watches
Polar
free delivery
iGPSPORT HR40 Heart Rate Monitor Chest Strap, Bluetooth ANT+ 1200H Battery Life IPX7 Waterproof HRM Sensor, for Cycling Running Yoga Fitness Sports
【High Accuracy】: With bluetooth & ANT+ dual module, accurately monitor your heart rate during activities or workouts. Offcial iGPSPORT APP supports custom heart rate intervals and intelligent analysis.
free delivery
COOSPO Heart Rate Monitor Chest Strap,Bluetooth ANT+ Chest HRM for Running Cycling Gym Fitness, Heart Rate Monitors IP67 Waterproof Compatible with Strava Zwift Wahoo Garmin Polar Peloton App
CooSpo
free delivery
Personal ECG Heart Monitor with Chest Strap - Record ECGs at Home - Detects Atrial Fibrillation and Irregular Arrhythmias Results in 30 Seconds - Works with Most Smartphones
Personal ECG Heart Monitor with Chest Strap - Record ECGs at Home - Detects Atrial Fibrillation and Irregular Arrhythmias Results in 30 Seconds - Works with Most Smartphones
free delivery
Rich Green Valley Heart Rate Monitor Chest Strap - HRM Sensor Bands for Polar H10, H9, H7, Coospo, Wahoo Tickr, Garmin - S, Black
COMPATIBLE WITH THE HEART RATE SENSORS: Chest strap works with the most popular heart rate monitor and sensor such as Garmin, Polar, Wahoo TICKR, CooSpo and more!
free delivery
FITCENT 2 in 1 Heart Rate Monitor Chest Strap/Armband with Bluetooth5.0 ANT+, Heart Rate Sensor Compatible with Peloton Strava Wahoo Polar DDPYOGA Garmin Watch
Fitcent
free delivery
HOUAN Activity Tracker Fitness Trackers Smart Watch with Body Temperature Heart Rate Blood Pressure Monitor IP68 Waterproof with Sleep Monitor Calorie Step Counter for Women Men
HOUAN
free delivery
COOSPO Heart Rate Monitor Chest Strap H6M, Bluetooth ANT+ Heart Rate Monitor Chest Sensor with 400H Battery, HRM Works with Strava/Wahoo Fitness/Polar Beat/Peloton/Zwift/DDP Yoga App
CooSpo
free delivery
CARDIO sport Heart Rate Monitor HRM Chest Strap Replacement Adjustable Belt Size S-XL, Accurate HR Sensor Soft Fabric Strap, Garmin HRM Dual, Wahoo TICKR, Polar H7, Peloton, Hammerhead, Sigma
CARDIO sport
free delivery
moofit HW401 Heart Rate Monitor Armband IP67 Waterproof | Support Bluetooth/ANT+, Rechargeable Optical Heart Rate Sensor Bracelet Works with Wahoo, Strava (Dark black)
moofit
free delivery
Polar H10 Heart Rate Monitor – ANT Plus, Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in memory, Software updates (H10, M-XXL,Black Crush)
Polar
free delivery
CARDIOSPORT Heart Rate Monitor Replacement Chest Strap, Adjustable HRM Sensor Belt Black Size S - XL | Compatible with: Garmin HRM Dual, Wahoo TICKR, Polar H7
CARDIO sport
free delivery
Polar Pacer Pro GPS Running Watch with Wrist Heart Rate | Sleep tracking, Training Load, Recovery tools, Smart features
Polar
free delivery
Garmin HRM - Heart Rate Monitor Strap
Garmin
free delivery
CYCPLUS Heart Rate Monitor Chest Strap H2Pro, Bluetooth ANT+, 500H Battery | ECG Algorithm for Precise Heart Rate Tracking, IPX7 Waterproof and Dustproof, HRM Works with Strava/Cycplus Fit App
CYCPLUS
free delivery
Frontier Heart Rate Monitor Chest Strap – Accurate HR Tracking with ZONE2 Training, Strain & Breathing Insights, Real-Time Alerts, Comfortable Wearable for Endurance Training, Running & Cycling
Frontier X
free delivery
Rich Green Valley Heart Rate Monitor Replacement Strap, Adjustable Chest Band Compatible with Myzone MZ-3 & MZ-1 (2 Pack), Red Black, M
Compatibilit Designed to work as a Bluetooth heart rate moniotr chest strap replacement fits for MYZONE MZ-3 & MZ-1 (Not Compatible with MZ-SWITCH) for seamless replacement.
free delivery
Polar Verity Sense - Optical Heart Rate Monitor Armband - ANT+, Dual Bluetooth
COMFORT: Polar Verity Sense keeps your wrist free for maximum comfort and freedom of movement. Just slip it on your upper or lower arm, clip it on your goggles or place it snug and firm against your skin under tight-fitting clothing.
free delivery
STATSports Heart Rate Monitor Strap - Compatible ONLY with APEX GPS Tracker | Bluetooth HR Chest Strap, Magnetic Clip Design, Requires Academy App, Not a Standalone Device, Ideal for Sport HR Tracking
STATSports
free delivery
RichGreenValley Heart Rate Monitor Chest Strap, Sweatproof and Waterproof Pro Chest Strap Compatible with Sensor for Polar H10,H7,H1,Wahoo Tickr,Garmin HRM Replacement Chest Strap
Rich Green Valley
free delivery
COOSPO H9Z Herat Rate Monitor Chest Strap,Bluetooth 5.0 ANT+ Heart Rate Monitor,Heart Rate Sensor with Rechargeable Battery,HRM Works with Strava/WahooFitness/Polar Beat Peloton/Zwift/DDP Yoga App
CooSpo
free delivery
PEUTIER 4pcs Replacement Heart Rate Monitor Bands, 0.8x15.75in 4 Colors Soft Heart Rate Strap Adjustable Armband Strap Heart Rate Monitor Band for OTF Beat Heart Rate Sensor,and For Theory Fitness
PEUTIER
free delivery
Garmin HRM-200, Heart Rate Monitor with HRV data, 3ATM water rating, up to 1 year battery, machine washable strap, adjustable strap to ensure ideal fit, Size M-XL
Garmin
free delivery
COROS Heart Rate Monitor, Comfort, Easy to wear, Auto-wear Detection, Precise Data, Bluetooth, 38 Hours Battery Life, Compatible with up to 3 Connections, for Run and Bike
COROS
free delivery
KardiaMobile 1-Lead Personal ECG Heart Rate Monitor + 1 Month Free of KardiaCare - Record ECGs at Home, Detects Atrial Fibrillation, Trusted by the NHS, Fast Results, Works with Most Smartphones
AliveCor
free delivery
Polar H10 Heart Rate Monitor - ANT +, Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in memory, Software updates - Works with Fitness apps, Cycling computers, Sports and Smart watches
Polar
free delivery
Heart Rate Monitor Chest Band for Polar H10 H9 H7, Adjustable Waterproof Replacement Chest Strap Compatible with Polar Garmin
hoeslaw
free delivery
Amazfit Helio Strap Fitness Tracker Wristband, 24/7 Activity & Sleep Tracker with Heart Rate, 10 Days Battery, 110+ Sports Modes, Strength Training, Hyrox Race, Subscription Free for Android & iPhone
Amazfit
free delivery
Heart Rate Monitor Chest Strap HRM CHILEAF Accurate HR Sensor ANT + Bluetooth Waterproof Comfortable Washable Strap Long Battery Life Compatible with Wahoo Fitness,Polar Beat,Zwift,Runtastic Pro,Etc
CHIEALF heart rate monitor chest strap uses high-precision ECG sensor, real-time monitoring of heart rate changes, making your exercise more scientific and effective. Heart rate monitoring range 30 bpm~240 bpm, heart rate monitoring accuracy +/-1 bpm.
free delivery
COOSPO HW9 Heart Rate Monitor Armband,ANT+ and Dual Bluetooth5.0 HRM,Optical Heart Rate Monitor with HR Zone,IP67 Waterproof HR Sensor Compatible with Peloton Strava Zwift DDP Yoga
CooSpo
free delivery
moofit HR8 Heart Rate Monitor Chest Strap, Low Energy Real-Time Heart Rate Data, Bluetooth 5.0/ANT+, Larger Communication Range, IP67 Waterproof, Compatible with iOS/Android Apps, Fitness Equipment, Black
moofit
free delivery
WHOOP 5.0/MG Activity Tracker - 12 Month Membership - Health and Fitness Wearable – 24/7 Activity and Sleep Tracker, Personalized Coaching, Menstrual Cycle Insights – 14+ Days Battery Life
WHOOP
free delivery
KWEROE Fitness Tracker Activity Tracker 1.10''AMOLED Touch Color Screen, Step Counter with 24/7 Blood Oxygen Heart Rate and Sleep Monitor, Calorie Pedometer Health Smart Watch for Women Men
KWEROE
free delivery
FITCENT Heart Rate Monitor Armband, Bluetooth ANT+ Optical Heart Rate Sensor Arm Band, Rechargeable Fitness Tracker for Peloton Strava Zwift Polar Beat DDP Yoga Wahoo Fitness Garmin Watch
Fitcent
free delivery
SUUNTO Smart Heart Rate Belt, Accurate Bluetooth Heart Rate Measurement Sensor, Multiple sports Comfortable fit for Running & Swimming, 500H Long Battery Life with Internal Memory, Waterproof, Black
SUUNTO
free delivery
KardiaMobile 6-Lead ECG Heart Rate Monitor with 1-Month KardiaCare | Portable 6-lead ECG, easy to use, records medical-grade heart rhythm, includes 1-month KardiaCare membership, NHS Trusted
HEART MONITORING ON THE GO: Capture unlimited medical-grade ECGs in 30 seconds and get an instant analysis right on your smartphone. KardiaMobile is small enough to fit in your pocket, so you can take it with you anywhere.
free delivery
Polar Verity Sense Optical Heart Rate Sensor Bluetooth & ANT+ | Swim mode, Internal memory, ANT+ & Dual Bluetooth, Peloton & Zwift compatible
COMFORT: Polar Verity Sense keeps your wrist free for maximum comfort and freedom of movement. Just slip it on your upper or lower arm, clip it on your swimming goggles or place it snug and firm against your skin under tight-fitting clothing.
free delivery
CHILEAF Heart Rate Monitor Armband HRM, Bluetooth ANT+, IP67, 60H Battery | PPG Optical Heart Rate Sensor, HR Zone LED Indicator, Compatible with Polar Beat, Wahoo Fitness, Zwift, X-Fitness
CHILEAF
free delivery
Polar H10 M-XXL Heart Rate Sensor Bluetooth & ANT+ | Fits 66–95 cm chest, ECG/EKG accuracy, HRV tracking, Waterproof
Polar
free delivery
Polar
Polar
free delivery
Rich Green Valley Heart Rate Monitor Replacement Belt Compatible with Myzone MZ-SWITCH Chest Strap Soft Adjustable 2 Pack (Black & Red,M-XXL)
Compatibility】 Designed to work as a Bluetooth heart rate moniotr chest strap replacement fits for MYZONE MZ-SWITCH (Not Compatible with MZ-3 & MZ-1) for seamless replacement.
Polar H9 Heart Rate Sensor – ANT + / Bluetooth - Waterproof HR Monitor with Soft Chest Strap for Gym, Cycling, Running, Outdoor Sports, Black & Pro Chest Strap - Heart Rate Monitor Belt
Product 1: Regular fit
