BLUETOOTH 4.0 and ANT+ Heart Rate Chest Cardio Premium Soft Strap RUNTASTIC, WAHOO, STRAVA for iPhone and Android - for Garmin, TomTom,Polar and more Instructions are available in several languages on the manufacturer 's website for download : DE ; EN ; FR ; IT; IT ; RU This strap can be used with Apps and sport watches, devices of all well-known brands ANT+ compatible to Garmin equipment (Forerunner etc.) as well as TOMTOM , Polar etc. Heart rate monitor heartbeat - water resistant (suitable for triathlon ) Bluetooth 4.0 compatible with iPhone and Android apps like Runtastic and more (Please note - Always connect the app with the sensor, not via Bluetooth pairing on your smartphone!)