If you are looking for a GPS-enabled sports watch, the Garmin Forerunner 210 with Premium Heart Rate Monitor offers an impressive list of functions and an easy to master interface that'll help you take your training regimen to the next level. Featuring a rechargeable lithium-ion battery, this training watch is the only device you need to track your distance, speed and heart rate. The Forerunner 210 includes interval training functionality, heart rate alerts and is also compatible with the Garmin Foot Pod for detailed performance tracking. Using GPS technology, this wrist top GPS accurately records your speed, distance and average pace information. Its high-sensitivity receiver communicates with satellites through tree cover and around the city. The included chest-strap heart rate monitor is required to monitor your heart rate, and the Forerunner 210 can even calculate heart rate based calorie consumption. The watch will store your data for comparison purposes, and you can upload your data to the Garmin Connect community website for long-term training and comparison profiles. Of course, the Garmin Forerunner 210 works as a full-function watch with time, date/day and daily alarm, too.