The hardware and algorithm of the Magene H64 chest strap heart rate monitor have been optimized to improve the reliability and accuracy of heart rate detection during exercise.
Battery life lasts for 1000 hours: 1 hour per day, 4 times per week,2.5 years working time. (The battery life data are based on laboratory test. The actual situation may be slightly different due to the use environment and other factors.)
[Compatible Ant+ & Bluetooth] 2 data copies for 1 workout, recording via ANT+ device and Bluetooth App at the same time, with stable transmission. ANT+: Magene, Wahoo, IGPSPORT, Bryton, Black Bird Bluetooth: Zwift, Onelap, Strava, Kinomap, Wahoo Fitness, TrainerRoad, Rouvy, Fulgaz, Nike Run Clus, Openrider, Elite HRV, Selfloops HRV，etc..

New Design: Newly designed hardware and algorithms avoiding the noise interference caused by movement and sweating，H303 heart rate monitor help you accurately monitor your heart rate while exercising, maximizing your exercise results.
LED Light Reminding: H303 heart rate sensor has a flashing LED light that confirms your heart rate and connection, allowing you to easily stay focused and improve efficiency during any activity or exercise. After the sensor is properly worn, it will automatically turn on, the front LED flashes (turns off after 10 times). * Note: The red light indicates that the monitor is ready to use.
Compatible ANT+&Bluetooth: 2 data copies for 1 workout, recording via ANT+ device and Bluetooth App at the same time, with the stable transmission. ANT+: Magene, Wahoo, IGPSPORT, Bryton, Black Bird. Bluetooth: Zwift, Onelap, Strava, Kinomap, Wahoo Fitness, TrainerRoad, Rouvy, Fulgaz, Nike Run Club, Openrider, Elite HRV

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Pedometer, Calorie Tracking, Lightweight, anti-sweat. Soft silicone with smooth finish for a sporty look. Comfortable and durable. It can not only remind you via vibrating when your phone receives calls, messages or other notifications but also displays details on the screen directly.
Fitness Trackers, when you turn on active mode during activities such as running, you can measure GPS route, calorie expenditure, speed, and heart rate in real time. Has the ability to analyse exercise data, recommended for daily health and exercise. Automatic recognition of walking, treadmill, outdoor running, outdoor cycling, rowing machine, Elliptical machine kinds of exercise modes, never miss every moment of exercise.

With the chest strap based on high quality material, The adjustable heart rate monitor chest band can be attached to your skin closely.
The heart rate monitor chest strap replacement is easy to use, durable, comfortable and adjustable elastic strap. Soft fabrics and adaptive electrodes make it extremely sensitive to your heart’s electrical signals.
The heart rate strap compatible with most of heart rate sensors (ANT+, Bluetooth 4.0, 5.3K). Suitable for Polar, Wahoo, Timex, Peloton, Coospo, Garmin products. Note: It does not fit the Polar H10 monitor.