With Trackr Heart Rate, WAHOO launches the first heart rate monitor from a major manufacturer on the market that relies on an integrated high-capacity lithium-ion battery instead of a button cell. This protects the environment and makes the sensor less susceptible to damage. Thanks to the Bluetooth Multiple Devices function, the Heart Rate Trackr can maintain up to 3 parallel Bluetooth connections simultaneously. Easily visible LEDs at the top indicate the status of the heart rate sensor. Featuring a new algorithm, Trackr Heart Rate provides you with accurate real-time heart rate data so you can increase your workout efficiency. For maximum comfort, the chest strap and buckle have been completely redesigned to give you complete freedom of movement. The Trackr Heart Rate connects in the blink of an eye to all ANT+ and Bluetooth-enabled indoor and outdoor training systems. You can also connect the heart rate monitor to your iPhone or Android smartphone.m With its built-in rechargeable lithium-ion battery, the Heart Rate Trackr provides you with approx. 100 hours of heart rate data in activated mode. The magnetic charging cable included in the delivery ensures a quick and easy charging process. In a long and intensive testing phase, the Trackr Heart Rate proved its robustness, even in the most difficult training conditions. With an IPX7 protection class, the sensor is equipped to withstand all the rigors of daily training.