The Nuband-i allows you to set daily, weekly and monthly workout goals and also helps you to achieve them by regularly monitoring your performance against your goal. Its features include a free app, sports monitor, sleep tracker, smart alarm and clock. Improve your health at the touch of a button. Touch panel control, call and message notification, camera remote controller and phone finding features. It also features wireless updates to continually iprove the perfomrnace of your Nuband. Touch Screen. Auto sync functionality. Notifications. Connectivity MB memory. Multi-platform operating system. Bluetooth 4 connection. USB 2 connection. Display information 23.11mm AMOLED screen. Touchscreen. Battery 75mAh battery capacity. Typical usage time of up to 7 days. Low usage time of up to 7 days. 3 hour charge. Physical specification Size: one size. Watch size H40, W16, D10mm. Strap size L225, W16, T3mm. Strap can be removed and replaced. Weight 25g. Features Water resistant. Dust resistant. Read texts. Receive social network notifications. Pedometer. Distance. Accelerometer. Calories. Sleep. Accessories included: No.