vivofit 4 activity tracker large black

periodically syncs to connect, where you can save, plan and share your activities, get involved in social challenges, and more features always-on customizable color display no charging necessary,tracks steps, distance, and calories burned, monitors sleep, and provides a personalized daily step goal it move iq feature automatically detects activity and classifies activity type on connect. features always-on customizable color display no charging necessary,it brings you activity tracking and the om to keep moving without taking a break to recharge..syi