Ultralight and slim zinc alloy smartwatch with Bluetooth calling function. Includes black silicone strap + navy blue silicone strap 1.7 '' HD touch screen with heart rate monitor, step counter, kilometers and calories. 8 sport modes to choose from, including: walking, running, cycling, basketball, soccer, badminton, jumping rope, swimming pool (do not use in salt water). Notifications of APPs and calls. Phonebook up to 8 favorite contacts and call log Waterproof IP67 *. Other functions: Sleep control Blood pressure and blood oxygen monitor Remote control for taking pictures Controlling your smartphone's music player Control of the female cycle Meteorological information Sedentary alarm Reminder to drink water Alarm clock Chronometer Flashlight Do not disturb mode Battery life: 3-6 days in use and 20 in standby (depending on how the watch is used, the battery life may be shorter). DaFit application. Compatible with iOS 9.0 or higher and Android 4.4 or higher devices.