This highly sensitive tracker will take your training to new heights; its advanced tracking and training programs accurately follow your progress. Easy-to-use right out of the box, no pace-setting calibrations necessary; GPS satellites calculate speed, distance and pace information; SiRFstar receiver provides rapid first fix and is sensitive enough to acquire signals in urban canyons and under dense foliage; Compact ergonomic design mounts on a wristband and features an easy-to-read display; Virtual Partner features lets you program time, distance and pace goals, then shows you if you're ahead or behind your goal; Calculates calorie consumption based on user's weight, distance traveled and hills climbed; Records lap history by day and week, stores up to 200 workouts in its memory; Pace alarm sounds if you're either exceeding or slower than your programmed pace.