Technical characteristics It also emits at 5KHz and is recognized by classic Polar and compatible instruments (eg treadmills) For mobile phones with Bluetooth Smart 4.0 technology and later. Communicates with iOS (newer than): iPhone (4S), iPad (3rd gen.) And Android 4.3 onwards (with possible incompatibilities on some types of Android for some features) Communicates with many applications on the latest generation of ios / android smartphones, such as Polar Beat and specialized ipad apps: Polar Team Solution, Polar Club Ability to connect to a Go Pro Hero camera. New strap, more stable fit, advanced electronics technology, improved algorithms Workout memory 1 (with the “Polar Beat” app) especially useful for water and contact sports Upgradeability. 400 hours of operation – with replaceable CR 2025 battery
