Here's what other sites are saying:
The HighGear AltiTech3 is small and lightweight, making this an ideal instrument for your outdoor adventures. This versatile altimeter was designed with an anodized aluminum carabiner that can attach to your belt loop, pack strap or sit upright on a flat surface. Equipped with an Altimeter, Barometer and Compass, this outdoor tool provides ascent and descent values, changing weather conditions and directional headings, while individual mode buttons allow you to quickly access this critical data. Clip it on and go!
If you're not keen on the wrist-watch look when you're moving through the mountains, clip the Highgear Alti Tech3 Altimeter to your pack before starting up the trail. The altimeter measures elevation, tracks total ascent and descent, and can store up to 50 logbooks for future reference. The barometer allows you to forecast impending weather while the digital compass helps you maintain a direct course home. Add in the thermometer, chronograph, and a range of date and time functions, and you're ready to head to the big mountains armed with information.
The Highgear AltiTech 3 multi-function carabiner watch is light and small, with an anodized aluminum carabiner that can attach to your belt loop or pack strap-or sit upright on a flat surface. Perfect for your next ascent, this watch features an altimeter with logbooks and data recall, barometer, digital compass, thermometer, chronograph and sunrise/sunset times. Altimeter displays ft. or meters with a range of -1,640 to 29,527 ft. (-500 to +9,000m) and a resolution of 3 ft. (1m). Altimeter tracks minimum/maximum altitude and total ascent/descent; it stores up to 80 altimeter logbooks with data recall. Barometer displays sea-level and absolute pressure in millibar (mbar)/hectopascal (hPa) or inches of mercury (inHg), with a range of 300 to 1,100 mbar/hPa (8.86 to 32.48 inHg). Digital compass features a range of 360deg with 16 cardinal points and 1deg resolution, calibration, adjustable declination and cardinal North indicator. Thermometer displays in Fahrenheit or Celsius with a range of 14deg to 140degF (-10deg to 60degC) and a resolution of 0.1degF (0.1degC). Chronograph/timer has a range of 100 hrs. with 1/100 second resolution; it measures splits and features a 100 hr. countdown timer. Time functions include 12- and 24-hr. formats, time/day/date, world time, sunrise/sunset times, 3 alarms and hourly chime. The Highgear AltiTech 3 multi-function carabiner watch also features a rotating bezel, button-lock option, mineral glass lens, EL backlight and 30m (100 ft.) water resistance.
Sun Company Altimeter 202
Sun Company Altimeter 203
Liberty Mountain Sb-500 Altimeter
La Crosse Technology K2-100
Tech4o Handheld Outdoor Data Center
Dakota Altimeter Clip