The large, clear display enables convenient operation and a clear presentation of information. Bluetooth calls: Thanks to the integrated microphone and speaker, calls can be made and received directly via the watch.Continuously monitors your heart rate to provide a better understanding of your health and fitness. Records your daily steps and analyses your sleep patterns to help you optimise your activity and rest periods. Receives notifications of incoming calls, text messages and other apps directly on your wrist to keep you informed. Choose from various pre-installed designs or design your own watch face for a personalised touch. Includes child-friendly games to keep you entertained and make the watch appealing to younger users. Battery life: The integrated lithium-polymer battery provides up to 3 days of use per charge and is charged via the USB cable supplied.