This device uses calories to allocate your Active Dayz™
With Garmin Swim™ on your wrist, you can focus on your technique instead of what lap you're on. It automatically knows the stroke you're using and tracks your lengths, strokes, distance, pace and more. With a few button presses, you can also log drills or start timed sets without constantly monitoring the pool clock. It even calculates your SWOLF score to help you gauge your swimming efficiency, making it ideal for lap swimmers of all levels. The intuitive interface utilizes 6 exterior buttons, so each and every function can be accessed quickly and easily.