Track your activity levels, sleep patterns, and heart rate data with the large Charge HR Wristband in black from Fitbit. This wrist-worn activity monitor tracks how many steps you take, your distance traveled, calories burned, floors climbed, and how many minutes you stay active. Thanks to its onboard Pure Pulse technology, the Charge HR also provides continuous and automatic heart rate data. You can use this heart rate data to monitor your intensity, analyze the effectiveness of your activities, maximize your workouts, and more—all without the need of an additional heart rate chest strap or accessory.