Quite simply, this is one of the most useful watches we’ve ever tested. In addition to onboard GPS and a fancy compass, the Ambit uses an accelerometer for even greater accuracy—you’ll feel as though you’ve got an Olympic timekeeper following you into the mountains. Besides being an amazing pace setter, it also displays altitude, barometric pressure, and (with the addition of a $50 strap) heart rate.
The compass in most watches requires you to hold the device level to get an accurate reading. The one in Suunto's Ambit is 3-D, automatically compensating for tilt and allowing you to orient yourself regardless of the angle of your wrist.