Maximize training, maintain intensity and monitor calorie burn with automatic wrist-based heart rate monitoring. With continuous heart rate readings, Surge keeps you in the zone—all day and during workouts.

Surge features include:

• GPS Tracking- See distance, pace and elevation climbed & review routes and split times


• Get continuous, automatic, wrist-based heart rate and simplified heart rate zones


• Track workouts & view workout summaries; plus all day activities including steps, distance, calories burned, floors climbed and active minutes


• Monitor your sleep automatically and wake with a silent alarm


• See call and text notifications on the touchscreen display


• Sync stats wirelessly and automatically to your computer and over 150 leading smartphones

This fitbit is black, gently-used, size large.