The Suunto Vector Watch is pretty much the gold standard of outdoor sports watches, and is the most legendary of all Suunto's Mountain Sports watches. The Vector Watch has the features you need for just about any adventure: altimeter, barometer, compass, and watch.
The Suunto Vector's altimeter has a range of 9,000 meters or 29,500 feet, and features an altitude difference measurement for tracking different stages of a climb. The 24-hour memory stores the ascent/descent rate for every hour, has an adjustable altitude alarm and a bunch of other memory functions. The logbook function lets you record your total and cumulative vertical ascents and descents or number of runs skied. This is essential for showing off and making everyone think you're a BA.
The Vector has a digital compass that guides you with cardinal or half-cardinal points and the north-south arrow. You can set the compass to track a specific bearing, and correct the difference between true and magnetic north for a more accurate reading. The Vector Watch is also a watch. That tells time. You already knew that.
The Suunto Vector Heart Rate Monitor Watch has the altimeter, compass, barometer, and watch features of the Vector Watch, but throws a little heart monitoring into the mix. You use the Suunto Comfort Belt to transmit your vitals to the Vector Heart Monitor. The Vector HRM lets you set heart rate zone alarms to help you keep yourself on track. The heart monitor gives you an objective measurement of exertion during training.