vÃÂvosmart HR+ activity tracker uses Elevate wrist heart rate technology to monitor heart rate at the wrist 24/7. That gives you the freedom to work out however you want, with no additional heart rate strap needed. Using heart rate, vÃÂvosmart HR+ provides calories burned information. Whether you're going for a jog, playing a pick-up game with friends or trying out a new boot camp class, it quantifies the intensity of your fitness activities using intensity minutes. This feature lets you monitor your progress against activity goals recommended by health organizations such as the American Heart Association, U.S. Centers for Disease Control and Prevention and the World Health Organization. Additionally, you can use your vÃÂvosmart HR+ as a heart rate strap on your wrist when paired with other compatible Garmin devices. Product Type: Activity tracker Supported Host Device OS: iOS, Android Display: Monochrome Input: Touch screen Tracking Data: Distance, time, calories burned, activity, sleep activity, heart rate, steps taken, floors climbed Band: Regular Features: Heart rate sensor, navigation, missed calls notification, music remote handling, calendar notification, SMS notification, Email notification, camera remote control, find phone function, Move IQ Battery Run Time: Up to 5 day(s) Color: Midnight blue Dimensions (WxDxH): 0.8 in x 0.5 in Weight: 1.09 oz Manufacturer Warranty: 1 year warranty Product Type: Activity tracker Integrated Components: Heart rate sensor, navigation Supported Host Device OS: iOS, Android Tracking Data: Distance, time, calories burned, activity, sleep activity, heart rate, steps taken, floors climbed Color: Midnight blue Features: Missed calls notification, music remote handling, calendar notification, SMS notification, Email notification, camera remote control, find phone function, Move IQ, heart rate Type: Monochrome Type: Touch sensitive screen Technology: Lithium Run Time (Up To): 5 day(s) Run Time Details: Navigation tracking - up to 8 hours Size: Regular (fits wrists 136-192 mm) Width: 0.8 in Height: 0.5 in Weight: 1.09 oz Preloaded Software: Alarm Clock Vibrating Alert: Yes Protection: Waterproof Included Accessories: Charging/data clip Warranty: 1 year warranty