Precise Performance: Provides accurate real-time heart rate data to enhance training efficiency and support optimal performance. Powered to Endure: Equipped with a high-capacity rechargeable battery with over 100 hours of active battery life, TRACKR HEART RATE is always ready to train Completely Connected: With ANT+ and Bluetooth connectivity, its simple to connect TRACKR HEART RATE to a smartphone, broadcast to a wide array of fitness equipment, and sync to the most popular training apps and accessories. Controlled Comfort: TRACKR Heart Rate offers a slim, soft, secure fit strap, which feels comfortable, but also keeps the sensor securely in place during intense exercise. Intuitive LEDs: TRACKR Heart Rate features an LED indicator during your work outs. Alerts include confirming heart rate detection, battery status and to ensure you are still connected to your training devices.