WARM TIPS:Pls check for the connector orientation when charging,the watch will be not charged if you put it in wrong orientation.Seamless integrated design: Thinner, more delicate, more powerful, more technology experiencing Real Next to skin wearing without down weight Feeling, easy and simple using experiencing Incoming caller,Message notification display, check Caller ID, SMS, Twitter, Skype etc. just by simple hand raising Ultra-standby time, low battery alertingWireless Sync Data with both Android and iOS Smartphones Android phones without plugging in or pushing buttons. This gives you real time access to your stats on the Smartband dashboard throughout the day. Also with select NFC enabled Android devices, you can tap your device to launch your Smartband stats. Smartband tracks your sleep time, the times of your wake up. Also with a silent wake alarm.X6s will help you to improve your sleep quality Share and Compete With Friends: Make progress,win your wards for daily,weekly,monthy achievements. Challenge and compete with your friends, get praise together. Support firmware OTA upgrading, easy error repair and function expanding.