Garmin Vivofit 4 Activity Tracker

The Garmin vivofit 4 fitness tracker offers customizable display with seamless syncing of data, and auto tuned for round the clock monitoring. This activity tracker tracks your sleeping habits, steps and calories burned, and syncs perfectly with external devices and apps.

Pros
1+ year battery life
Offers continuous tracking
Customizable color display

Cons
No heart rate monitor