IP67 waterproof : with IP67 level of waterproof performance, hand washing, rain .There is no fear of water environment, 2.5D Curved screen. 1.3 inch super clear display., Multi motion calculation. Built in advanced sensor effectively filters no movement and high frequency activity., Auto Sleep Tracking. Automatically tracks your sleep duration and consistency wakes you up peacefully with a silent alarm., Inforamtion Svnchronization. Real time display of synchronous phones,wechat, QQ,calls,skype,whatsapp,facebook,linkedin,twitter,viber and other news alerts.