Featuresr you must connect phone through bluetooth before user only for ios 60 android 43 above smartphonesr pedometer track daily activities including steps distance and caloriesr track sleep quality monitor your sleep qualityr sensitive warning can call you to get up at a certain timer sports remind when you did not do sport long time bracelet will have free reminder remind you to do some sportsr it is also a health partner be ready to help you to do physical exercise at any t