High Quality Bluetooth I6 Flex Wireless Activity and Sleep Wristband Bluetooth V4.0 Pedometer Smart Wristband Bracelet with Sports Sleep Tracking Activity Tracker Compatible with Iphone App Store & Android Smartphone (Black) New in Box 1pcs 1 Pcs Create Healthy Habits with the Healthy Habits System - makes Habit formation fun! Tracks steps, distance, calories burned. Comfortable and easy to wear. Monitor how well you sleep. Syncs via Bluetooth 4.0 with iOS and Android.(must be Android 4.3/iOS 6 or above version). Wakes you (and not your partner) with a silent wake alarm.