Fitbit – Alta HR Activity Tracker + Heart Rate,Large – Black

Wrist-Based Heart Rate Data
– Tracks Steps, Distance, Calories, Time
– Activity Reminders
– OLED Tap Display
– Sleep Tracking with Silent Alarms
– Water Resistant
– Up to 7-Day Battery Life
– Windows, Mac, iOS, & Android Compatible
– Fits Wrists 6.7 to 8.1″ Around
– Swappable Bands