Fitbit Alta Fitness Tracker (US Version)

Track steps, distance, calories burned and active minutes
See stats and time with a bright OLED tap display
Battery life up to 5 days (varies with use and other factors)
Automatically track how long and how well you sleep, and set a silent, vibrating alarmAutomatically track how long and how well you sleep, and set a silent, vibrating alarm
Get call, text and calendar notifications at a glance when phone is nearby. This model does not have a heart rate tracker