ANT+ Bluetooth Heart Rate Monitor - This H6 supports both Bluetooth 4.0 and ANT+ protocol, allow for wireless connection to both smartphones and GPS devices
Workout Efficiently - view real-time heart rate, training zones and calories burned, maximize your workout
App Compatible - Strongly compatible with main stream apps like Wahoo, Strava, Zwift, Endomondo, IpBike, Nike+ Running, elite hrv app, iCardio and others
Adjustable Chest Strap - Fabric material, comfortable to wear, adjustable length from 65" to 95". Chest strap replacement: https://www.amazon.com/dp/B07J68QQD3
ATTENTION: Many customer complain this device won't work because they did not pair it correctly, kindly turn on bluetooth, and go to the APP to add our device. For more info, please visit: https://youtu.be/6JBHwHveelg