Features: Advanced ST17S25 CPU, quick data process. 0.42inch OLED touch screen with backlight, touch to operate. Compatible for Android 5.0 and IOS 8.0 or above, with BT 4.0 technology it can connect a phone to synchronize information. IP67 water-proof for washing hand, water splashing etc. Made from ABS PC case and TPU band. Multi-function: Heart Rate Monitor, Pedometer(Calories, Distance, Steps), Sleep Monitoring, Alarm Clock, Anti-lost, Instant Notification. Support 13 kinds of language: English, French, Italian, Spanish, Polish, Portuguese, German, Dutch,Turkish, Arabic, Persian, Greek, Russian. Note: 1. Before usage, please download app by scanning the QR code(in User Manual) to install the app. 2. Before the first use, please charge it.