Suunto Vector Wrist-Top Computer Watch with Altimeter, Barometer, Compass, and Thermometer (Black)

The altimeter includes functions showing current altitude up to 29,500 ft/9,000 m, and your ascent/descent rate in feet or meters per minute. Its difference measurement function allows zeroing of the altimeter for following your vertical progress between various destination stages, and the automatic 24-hour memory stores your altitude and ascent/descent rate for every hour continuously, with a logbook that stores total ascent/descent, average ascent/descent rate, and even the number of runs you've skied for the duration of the log.

The barometer provides absolute pressure range from 8.90 - 32.40 in Hg / 300 - 1100 mbar, and sea level pressure range 27.25 - 31.90 inHg / 921-1080 mbar. You'll also get 0.05 inHg / 1 mbar resolution, and a difference measurement function that allows zeroing of the barometer for following overnight changes in barometric pressure and temperature. There's also an automatic 4-day memory--which can store pressure information in one hour intervals for the last six hours, then in six hour intervals after that--and a handy, adjustable, sea-level pressure function.

The compass function includes bearing in degrees and cardinal or half-cardinal point, a North-South arrow, and a bearing tracking function which displays locked bearing, actual bearing, and the difference between these declination adjustments. There's also a bubble level to indicate level position to ensure +/- 2-3 degree reading accuracy, and a declination adjustment. The watch function provides a basic 12/24 hour clock, a calendar pre-programmed to 2089, 3 daily alarms, and a stopwatch and countdown timer that both run for 23:59:59 hours. You'll also get a thermometer, and the watch comes with a user-replacable battery. All this is packed into a 1.9 oz. device.