● Waterproof to 50m (165 ft.), Forerunner 310XT is an ideal training tool for triathletes and swimmers who want speed and distance data in open water or outdoor pools

● Forerunner 310XT features a new advanced calorie-consumption formula that calculates calories burned based on micro changes in the user's heart rate during aerobic activity

● Developed by excercise scientists and world-class athletes, the formula more accurately calculates calories burned than previous methods

● GPS satellites accurately calculate speed, distance and pace information; GPS receiver provides rapid first fix and is sensitive enough to acquire signals under cloud cover

● Navigation capabilities let you mark locations, find locations or navigate back to the starting point

● Wireless chest-strap heart rate monitor helps you train in your target zone to optimize performance

● ANT+ wireless technology allows the Forerunner 310XT to communicate with other ANT+ enabled devices, such as PowerTap, SRM and Quarq power meters (not included)

● ANT+ wireless technology lets you automatically transfer data between your computer and Forerunner without even taking the watch off; compatible with Mac and PC computers

● Use the Garmin Connect community website to track your time, speed, distance and calories burned; store and share routes with other Forerunner users on the website

● Website also allows users to categorize and design workouts based on activity—prior workouts can be saved by day and week designations

● Wireless data transfer can be used to send courses, goals and workouts from your computer to the Forerunner 310 XT before heading out for a jog

● You can also share workout information and compete against other users' recorded courses by wirelessly transferring data to other Forerunner 310XT units nearby

● 20 hr. battery life provides accurate pace, speed and distance data for ultra endurance athletes

● Optional foot pod (sold separately) transmits speed/distance data without the use of satellites, so the Forerunner 310XT can also be used indoors

● Forerunner 310XT tracks your cycling workouts when paired with a GSC 10 Speed and Cadence Sensor, sold separately

● Includes: 310XT wrist unit, HRM chest strap, USB ANT stick, AC adapter, charging clip, owner's manual and quick reference guide