Features:[Smartwatch for Phone-call] Supports dual BT connection (BT5.0 + BT3.0), and the built-in speaker and microphone are perfect for quick chats with seamless switching to your smartphone if needed.[Customizable Screen] Customizing watch face is supported, which is available both for Android and iOS user. You can use any of your favourite pictures in the phone as your watch face.[1.54 HD Touchscreen] Large displays more. Shows you message, multiple watch faces, health data and more with comfortable HD screen.[Health Monitor] Performs 24-hour uninterrupted high-precision heart rate detection. Provides accurate measurement of blood pressure and SpO2.[8 Workout Modes] Supports 8 mainstream workout modes. Tracks your activities, records physical data in full, and perform analysis on them.[Sleep Tracker] Auto monitor your sleep at night and give you an analysis of your sleep patterns.[Notification Reminder] Receive notifications from your smartphone applications to keep you informed while working out.[More Features] Weather forecast, music control, sedentary reminder, remote shutter, alarm clock, countdown stopwatch, and more.[IP67 Waterproof] Able to withstand splashes and sweat. All right to wear it for daily use or outdoor exercise.[Multiple Watch Faces] There are 60+ personalized watch faces available on Da Fit for your Zeblaze GTS.[Long Battery Life] Enables 10 days’ battery life under basic watch mode; 7 days under daily use mode; and 220 mins under BT call mode.Note:*Not for swimming. Do not wear it when taking hot shower or sauna.*BT connection is required for phone calls.*Basic Watch Mode: Turn off the BT connection, heart rate monitor and other functions, and lift the wrist to see the time 100 times a day.*Daily Use Mode: Enable continuously heart rate monitor, sleep monitor, 150 pushed notificaions lighting-up the screen, lift the wrist to see the time 30 times, and 5 minutes for other operations everyday, exercise 3 times a week for 30 minutes.*BT Call Mode: Enable BT call, exercise tracker and heart rate monitor.Parameters:Screen Type: IPS Color TouchscreenScreen Size: 1.54 inchSensor: Heart-rate sensor, Proximity sensor, Accelerometer.Alert Type: VibrationBT: BT5.0 + BT3.0Battery Capacity: 240 mAhCompatibility: Compatible with Android 4.4 or later, iOS 9.0 or later.Standby Time: 10 days (Basic watch mode); 7 days (Daily use mode); 220 mins (BT Call Modes)Charging Time: about 1.5 hrsApp: Da FitApp Language: English, Portugus(Brasil), Portugus(Portuguesa), �, Espaol, Italiano, Franais, Deutsch, ???????, ÈÕ±¾ÕZ, ArabicFeatures: BT Calling(Receive / Make Call), Heart Rate Monitor, Blood Pressure Monitor, Blood Oxygen Monitor, Steps Tracking, Calorie Burn Tracking, Sleep Tracking Stages, Exercise Tracking, Daily Steps Goal, Real-time Pace Distance, Goal Celebrations, Sedentary Reminder, Smartphone Notifications, Countdown Stopwatch, Alarm Clock, Multi-watch Faces, Turn Wrist Detection, Music Control, Shake Shoot (Remote shutter).