The newest Timex Bodylink "3D" GPS Speed and Distance plus Heart Rate Monitor System BUNDLED WITH the 5G751 DATA RECORDER 2 !!! Now you can track your altitude with "vertical speed" (ascent and decent rates) in addition to SPEED, DISTANCE and HEART RATE -- ZONE ALERTS allow you to set the watch to alert you when you are faster or slower than your defined speed or pace limits -- DISTANCE ALERTS will alert you when you have travelled a set distance -- HANDS FREE OPERATION can be set to start, stop and take splits automatically based upon Distance, Speed or Time -- TARGET ZONES can be preset to notify you when your heart rate is not in your desired zone -- Many other heart rate monitoring features. Bike Mount Included. Water Resistant to 50 meters.