Timex Ironman Run Trainer GPS with Heart Rate GPS-enabled watch measures pace, speed, distance, and more, in real-time Fast, reliable signal with SiRFstar IV GPS technology; constantly updated heart rate information via the included wireless monitor Customize the display feed with four unique sets of data, which you can download and plot over time to track progress Highly customizable, easy-to-read screen shows three or four lines of data; interval timers, alerts, and 15-workout memory Includes limited one-year manufacturer's warranty