Get to know yourself with Garmin's Forerunner 620; it may know more about you than you! This GPS watch displays all the basics like pace, distance, run time, and calories burned on an easy-to-see color touchscreen. When paired with your smartphone via Bluetooth, it enables Live Tracking so friends can follow your progress out on the road. The 620 can also upload directly to Garmin Connect for later analysis. What makes it special, though, is Garmin's revolutionary Run Heart Rate Monitor that tracks heart rate, estimated V02 max (maximal oxygen consumption per minute per kilogram of body weight), cadence (the number of steps per minute) vertical oscillation (the bounce in your stride), and ground contact time (the amount of time your foot is in contact with the ground per step). Plus, the 620 uses your estimated V02 as a race predictor; just plug in the distance to get an idea of your estimated finish time. With all these amazing features, you might be tempted to overdo it. The 620 won't let that happen—it tells you when you need more recovery time so you get the most out of your training. All this will make you faster and more efficient than ever before. Don't just measure miles, measure what counts with Garmin.