![Chest strap Bluetooth with ANT+ 5 kHz uncoded for Runtastic, Wahoo, Strava, Runmetter, Endomondo, Runkeeper app for Android such as Samsung S3 / S4 / S5 / S6 / S7 / S8 / Chest strap Bluetooth with ANT+ 5 kHz uncoded for Runtastic, Wahoo, Strava, Runmetter, Endomondo, Runkeeper app for Android such as Samsung S3 / S4 / S5 / S6 / S7 / S8 /](https://m.media-amazon.com/images/I/51PjU-vBJwL._AC_UF894,1000_QL80_.jpg)
Chest strap Bluetooth with ANT+ 5 kHz uncoded for Runtastic, Wahoo, Strava, Runmetter, Endomondo, Runkeeper app for Android such as Samsung S3 / S4 / S5 / S6 / S7 / S8 /
![Runkeeper update allows Apple Watch Series 2 & Nike+ users to track iPhone-free runs via GPS | AppleInsider Runkeeper update allows Apple Watch Series 2 & Nike+ users to track iPhone-free runs via GPS | AppleInsider](https://photos5.appleinsider.com/gallery/19317-19551-HeartRate-m.jpg)
Runkeeper update allows Apple Watch Series 2 & Nike+ users to track iPhone-free runs via GPS | AppleInsider
![The Beets BLU heart rate monitor transmits the heart rate through Bluetooth to the iPhone, where an app like Runkeeper logs the data. Heart rate monitor with chest strap, in March 2014 The Beets BLU heart rate monitor transmits the heart rate through Bluetooth to the iPhone, where an app like Runkeeper logs the data. Heart rate monitor with chest strap, in March 2014](https://c8.alamy.com/comp/DY0Y08/the-beets-blu-heart-rate-monitor-transmits-the-heart-rate-through-DY0Y08.jpg)