Place of Origin: China Display Color: Color Feature:APP Control Operation System: A NDROID, IOS Movement Type: Automatic Band Material: Rubber Case Material: plastic Function: Fitness Tracker, Call Reminder, Message Reminder Product name: M4 Smart Watch Color: Red/Black/Blue Version: 5.0 Waterproof: IP67 Hot Sale with: wrist sport band Features: Type:Smart Bracelet Color:As the picture Operation Mode:Touch Operation Power On :Long press function key Charging Time :2 hours Charging Voltage :5V Current :1A-2.1A   Description: 1.About 3-7 days standby time. 2.Full-day activity tracking: steps, calories burned, mileage and True Heart rate. 3.Intelligent reminder: Call reminder, information push, sedentary reminder. 4.More functions: telephone search, remote camera, stopwatch. 5.0.96 inch TFT color touch screen: high-definition screen, easy to read all fitness data. 6.Version 4.0, compatible with Android 4.4 and above systems, iOS 8.5 and above systems. 7.Applied Support Languages: Russian, German, Italian, Japanese, French, Simplified Chinese, Traditional Chinese, Portuguese, Spanish, Arabic, Korean. Material Front shell: PC, rear shell: ABS+PC Wrist band: environmental TPE