Scan the QR code in the User's Guide or in Google Play or the Apple App Store to download and install the "VeryFitPro" app into your phone "VeryFitPro" on your smartphone, data is synchronized to the app. Advanced: Display: 0.91 inch OLED display Touch Screen: Multi-Point Touch Screen Syncronization: Bluetooth 4.0 Loading: With Clip Charger Battery: Lithium-ion polymer battery Standby time: 5-10 days Waterproof and dustproof: IPX7 Measures for a wrist size of: 160~230MM Compatible: For Android 4.4 and later, IOS 7.1 and above Features: ★ Bluetooth Connection ★ Heart Rate Monitor/ Pedometers / Calories Monitor/ Sleep Tracker Moving sensor ★ Time/ Date Indicator (sync with phone automatically) ★ Recognition Caller ID/ SMS/ Reminders Display/ WebChat/ Facebook/ Twitter/ WhatsApp/ Linkedin/ Instagram/ Messenger Vibration Reminder ★ Waterproof (Attention: It's suitable to swim, but not to dive.) ★ Camera/Music remote control system ★ Anti-lost phone Q: What can I do if the device is not found when I connect? A: Step 1: Make sure Bluetooth is enabled on your phone and it is at least Android 4.4. or iOS 7.0. Step 2: Make sure the distance between your phone and the wristband is 0.5 meters. The device works in the normal Bluetooth communication range (within 10 meters). Step 3: Make sure the battery is not empty.