Features: Advanced CPU Dialog 14585, quick data processing. Compatible for iOS 7.1 Android 4.4 or above, with BT 5.0 it can connect with a mobile phone to synchronize information. OLED screen with backlight, clear to see. IP65 water-resistant for washing hand, splashing water. Made from silicone band and case, lightweight, soft and comfortable. Other Functions: Heart Rate Monitoring, Blood Pressure Monitoring, Pedometer(Distance, Calorie, Steps), Wristband Anti-lost etc. Note: 1.For the first use, please charge it first. 2.Please scan the QR code in the user manual to download and install APP. 3.App supports 11 kinds of languages, which are English, Italian, French, German, Japanese, Korean, Russian, Ukrainian, Arabic, Spanish, Portuguese. Hardware Parameters: CPU: Dialog 14585 Compatibility: iOS 7.1 Android 4.4 or Above BT: 5.0 Screen: 0.91in OLED Screen, 128 * 32 Pixel RAM: 90KB ROM: 2MB Battery: Built-in 3.7V, 70mAh Polymer Lithium Battery Charging Method: 5V Magnetic Pin Charging Standby Time: 27 Days Use Time: 5-7 Days Water-resistant: IP65 Main Functions: Heart Rate Monitoring: Support Blood Pressure Monitoring: Support Pedometer: (Distance, Calorie, Steps) Wristband Anti-lost: Support App Functions: Blood Pressure Monitoring Record: Support Heart Rate Monitoring Record: Support Sleep Monitoring: Support Alarm: Support Remote Control Camera: Support Agenda Reminding: Support Wristband Anti-lost: Support Call Reminding: Support Information Display: Support App Information Notification: Support