● 【 Slim and Stylish 】- Slim and stylish design with only 18g, it also suits for kids 8+. <br>● 【 All-Day Activity Tracking 】- Automatically tracking your steps, distance and calories burning, you can see the data easily by tapping the watch display or checking your phone's app. <br>● 【 Sleep Tracker 】- Automatically detect your sleep and analyze your sleep quality with deep sleep,light sleep and awake time.The silent vibration alarm can wake you up without disturbing others. <br>● 【 Calls Messages and Alarm Vibration Alert 】- See Calls & SMS SNS ( facebook whatsapp etc..) messages on your wrist:You can set up to 10 alarm vibration alerts to remind you the important things. <br>● 【 Compatibility 】- With free app "VeryFitPro" , Compatible with Android 4.4 above and iOS 8.0 above ( for use with Smartphone only ) .