Monitors calories burned, activity duration, steps taken, distance walked, sleep quality and heart rate. Measures heart rate while exercising or at rest. Set personal goals for steps taken and track your progress. Bluetooth health tracker syncs and tracks your activity with an easy to use APP that is compatible with iOS and Android devices. Charge time is approximately 1-2 hours. Built-in rechargeable battery lasts approximately 4-5 days on a full charge. Recharges using included USB cable. Water-resistant. Gift box included.