Garmin Watch Forerunner 310 XT With HRM. Finally, a GPS enabled training device that is not afraid of the water. The rugged Forerunner 310XT is the triathletes indispensable training tool a GPS enabled trainer that is water resistant to 164 ft or 50 m, tracks data in multiple sport modes and sends it wirelessly to your computer. This multisport device has up to 20 hours of battery life, tracks distance, pace and heart rate on land, and goes from wrist to bike in seconds. Supplier Model Number 010-00741-01