FINIS Unisex Swimsense Live Bluetooth Swim Tracker, Black, Small

Waterproof watch that uses proprietary algorithms to record the most accurate swim workout data.
Provides a detailed analysis of workout data including total laps, pace, calories burned, distance-per-stroke and SWOLF (efficiency score).
Using the FINIS Live application, users can view and share workout data from multiple devices.
Able to identify all four swim strokes: butterfly, backstroke, breaststroke and freestyle.
Ability to customize pool distance, preferred measurement settings, gender and weight.