features 4 sport modes to meet different exercise demands: Outdoor Running, Treadmill, Outdoor Cycling, Walking. Through BT4.0 connection, you can have a full knowledge of your activity data on your smartphone App: heart rate, activity time, max speed, and more. Smart notifications remind you of important information your smartphone received. The power saving built-in battery lasts for 45 days after fully charged. The watch is designed to be lightweight and make your life healthier, more comfortable and enjoyable.Features:High-resolution, sunlight-readable, 1.28 inch Color Touchscreen Display. Customize with watch face designs.GPS+GLONASS Dual Modules acquire satellite quickly and accurately, tracking your distance, speed and location.Built-in PPG Sensor monitors heart rate all day with no additional strap required.Multi-sport modes include Outdoor Running, Treadmill, Outdoor Cycling, Walking; live track corresponding data like activity time, max speed, heart rate and more.Sync data to your smartphone App via BT 4.0 connection, suitable for Android 4.4 or above, for iOS 8.0 or above.Smart Notification lets you stay informed of important information like incoming calls, text messages, App notification, clock alarm, sedentary reminders.Battery charge lasts through all your activities with up to 45 days in watch/activity tracking mode or up to 22 hours using GPS.With 0.8 wide, adjustable soft watchband and at only 1 ounce, this sport watch will give unmatched comfort to your exercise.