•1.63" HD Screen Wonderful Presentation: AMOLED high-definition full screen. Wider color gamut and clearer picture quality. Alloy center frame to withstand daily wear and tear •Bluetooth Calling Smart Watch: Receive and make calls, one key to connect to the phone's Bluetooth Synchronize your phone's caller information •Synchronization Information: Synchronize cell phone contacts Dialing keypad, call log Synchronized alerts •Multiple Menu Modes: Menu styles can be switched according to your preference. Silky control, catering to different operating habits •Multiple Sport Mode: Supports a variety of sports mode recognition detection. Detect important data such as heart rate, distance, calories burned, and so on. Statistical multi-exercise value feedback in APP Specifications: Hardware Description Remark Acceleration Sensor SC7A20 Heart Rate 3300 High Precision Center Module Center Detection Screen Screen IPS Screen Size 1.63-inch round screen Resolution 466*466 Offline Payment Alipay Payment Code Blood Pressure Blood Pressure Support Oxygen Oxygen Measurement Support Ambulatory Heart Rate Exercise heart rate curve Support Touch Full Touch Support Buttons On/Off + Back Support Ambient Temperature Operating Temperature 10-50℃ Charging Magnetic charging Support Bluetooth Bluetooth call Support Standby Use Audio Bluetooth not connected use for 5 days, audio Bluetooth connected use for about 2-3 days, theoretical standby 20 days. Continuous call or music playback for 3 hours Connections are used according to individual usage Battery Capacity 250mAh Fully charged in 3 hours System Software Description Remark APP Fitcloudpro Fitcloudpro Android System Android 4.4 and above Fitcloudpro IOS System IOS9.0 and above Fitcloudpro Pedometer/Calorie Support Support Combination Lock Support Support Sleep Monitoring Support Support Vibration Motor Support Support Alarm Reminder Support Support Call Rejection Support Support Call Answer Support Support Bluetooth call Support Support Music Playback Support Support Lift your hand to light up the screen Support Support Screen Brightness Adjustment Support Support Weather Synchronization Connected APP synchronization Support Contact Synchronization Contacts can be synchronized Support Bluetooth dialing Direct dialing from the watch Support Nuisance Calls Built-in nuisance call display Support Stopwatch Support Support Multi-exercise mode Walking, Running, Outdoor, Hiking, Swimming, Basketball, Soccer, Badminton, Tennis, Golf, Skiing, Sit-ups, etc., 100+ exercise modes Support Sedentary Reminder Support Support Drinking water reminder Support Support Breathing Exercise Support Support Incoming call reminder / SMS reminder Android, IOS push call and message content Support Other Push SMS WeChat QQ Twitter Facebook etc. 10 kinds of push, optional all push Support WeChat Exercise Join the WeChat Sports Leaderboard (customizable private WeChat) Chinese is Support Dynamic Heart Rate Ambulatory heart rate histogram display and analysis Support Remote Control Photo Tap, Shake Support Dial Selection Multiple dial options, plus a custom dial, plus a huge selection of dials online Support UI Style 4 set Support Remote Control Music Control the phone player Pause/previous/next song Support Air Upgrade Support Support Multi-language Su