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Don't be fooled by the classic analog look of the Casio Pro Trek PRG550-1A1 Altimeter Watch; behind that pretty face lurks an altimeter, compass, barometer, thermometer, and full-featured watch. As rugged as it is feature-packed, this new member of the Triple Sensor family runs on Tough Solar Power technology that recharges every time you take it out into the light.

  • Altimeter features automatic memory and records up to 25 logs with high/low/total altitude, date, and time so you can keep track of your ascents and descents
  • Thermometer displays temperatures between 14F and 140F and the barometer warns of approaching storms with its atmospheric pressure measurements and graphs
  • Digital compass with needle display keeps you on course
  • Stainless/resin case is 100m water resistant and works down to 14F
  • LCD display's backlight illuminates the watch after dark, and activates with a flick of the wrist
  • Tough Solar Power, battery indicator, and rechargeable battery means you don't have to worry about battery replacement
  • Chronograph includes a countdown timer and stopwatch that tracks to the 1/100th of a second
  • Also functions as a regular watch with five daily alarms, standard and military time settings, and times for 29 cities
  • Reviews
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Only watch you'll ever need!

  • Familiarity:I've put it through the wringer
  • Fit:True to size

I've had this watch for over a year now, and it's been everywhere with me. Its face is a solar panel, which makes replacing the battery obsolete. The button don't accidentally get pressed, so the information you want will always be on screen. I had the Suunto core prior to this, and would take this over the Suunto. For one, I like analog better, and secondly the features of this watch work better. That being said, if you're looking for a "cleaner" watch, the Suunto is better. This watch looks beefy, whereas the Suunto looks a bit cleaner for going to a five star restaurant. If accuracy, quality, and durability is what you're going for, look no further. The minute hand acts as the compass needle , as well as the barometric pressure reading. All the other information is on the digital screen. The light is so bright that it also doubles as a 3-second flashlight in emergencies.

Bottom line, this watch is made for you!

Unanswered Question

Are any of the Casio watches good for...

Are any of the Casio watches good for recording the vertical skied? If measurements are taken only once every 2 minutes, a lot of vertical may not be recorded. Also, it seems there is no way to have the altitude changes recorded all day long, because there is no start/stop button. Every time I need to check the time, or the compass, the altimeter is automatically stopped. Is that really so?