Garmin Forerunner 310XT Waterproof USB Stick and Heart Rate Monitor, Gray/Orange Waterproof to a depth of 50 meters, so you can wear it in the pool or the lake to time your swim Tracks bike and run data and sends it wirelessly to your computer Track your position, distance, pace, heart rate (with bundled monitor), add accessories to measure power data and more 20 hours of battery life One-year limited warranty