Ultra-light and slim zinc alloy smartwatch with Bluetooth calling function Includes rose gold metal strap+pink silicone strap Customizable 1.7" HD touchscreen with multiple layouts Heart rate monitor, step, kilometer and calorie counter Other functions: Sleep monitoring Blood pressure and blood oxygen monitor Remote control for taking pictures Controlling your smartphone's music player Control of the female cycle Weather information Sedentary alarm Reminder to drink water Alarm Chronometer Flashlight Do not disturb mode Battery life: 3-6 days in use and 20 days in standby (depending on use the battery life may be shorter) DaFit App Compatible with iOS 9.0 or higher and Android 4.4 or higher devices