True fitness starts with the heart. That's why the Fitbit Charge HR Wireless Heart Rate + Activity Wristband continuously and automatically monitors your heart rate and displays the information right on your wrist, so you can maximize your workouts and track calorie burn. The Fitbit Charge HR has everything you need to take your workout to the next level and keep you productive throughout the day. GPS tracking lets you view your route, as well as monitor distance, pace, time, and elevation climbed. Connect the Fitbit to your phone via Bluetooth and stay in control of your phone calls. The Fitbit Charge HR also automatically detects what exercise you're currently doing and measures your effort and performance improvement, thanks to SmartTrack exercise recognition technology. Lightweight, minimal, and stylish, the Fitbit Charge HR will look great anytime, anywhere.