Check out the Polar Loop!
The Polar Loop is an easy to use, fitness tracking device that keeps track of your fitness data 24/7 and displays it on an easy to read, LED display. The Loop give feedback about your daily, weekly, and monthly activity including calories burned, steps taken, and heart rate (when paired with an H6 or H7 heart rate monitor, sold separately. The bracelet is adjustable and fits every wrist, and can even be taken in the pool on a swim. A free mobile app and web service allows you to see active, inactive, and sleep periods in detail, with guidance to help you reach your fitness goals.
More info: boulderrunningcompany.com