Garmin ForeRunner 310XT GPS Heart Rate Monitor
The Garmin Forerunner 310XT GPS Heart Rate Monitor Watch is a multi-sport training device that is not afraid of the water! The Forerunner 310XT is a triathlete's indispensable swim-proof training tool, tracking running and cycling data bike and run data during your workout for later upload a review via the included Garmin TrainingCenter software. With up to 20 hours of battery life, the Forerunner 310XT tracks distance, pace and heart rate, and goes from wrist to bike in seconds!
Please see this link for its replacement.