Garmin Forerunner 310XT Portable Navigator

Finally, a GPS-enabled training device that isn't afraid of the water. The rugged Forerunner 310XT is the triathlete's indispensable training tool - a GPS-enabled trainer that is water-resistant to 50m, tracks bike and run data and sends it wirelessly to your computer. This multi-sport device has up to 20 hours of battery life, tracks distance, pace and heart rate (optional), and goes from wrist to bike in seconds. The Forerunner 310XT is waterproof to a depth of 50 meters, so you can wear it in the pool or the lake to time your swim. And its slim design and flexible wristband mean Forerunner is easy to wear in any conditions.

Garmin Forerunner 310XT Portable Navigator Attach it to your wrist like a watch and know the distance traveled and track routes Built-in battery that gives about 20 hour run time