Armband Heart Rate Sensor - ptical heart rate technology to give you accurate heart rate, calories burned, distance, speed, pace
Bluetooth/ANT+ - Integrated with Bluetooth and ANT+, allows you to connect to smartphones, tablets, GPS watches, fitness equipment and bike computers
Rechargeable Battery - Allows you to workout up to 20 continuous hours. Buy extra charger here: https://www.amazon.com/dp/B07P2D4TMD?ref=myi_title_dp
No chest strap required. Comfortable and secure to wear on the forearm
APPs Compatible - Works with most popular health and fitness apps, including: Wahoo, Polar Beat, Run keeper, Mapmyfitness, Strava, Zwift, iCardio and more