Mixed Fitbit Alta ( Black,)

-Track steps, distance, calories burned and active minutes -See stats and time with a bright OLED tap display. -Wear your wristband up to 5 full days and nights without needing a charge -Automatically track how long and how well you sleep, and set a silent, vibrating alarm -Syncs with Mac OS X 10.6 and up, iPhone 4S and later, iPad 3 gen. and later, Android 4.3 and later, and Windows 10 devices -Get call, text and calendar notifications at a glance - Doesn't come with charger