Casio Protrek PRG-90T Specifications: Digital : Hour, minutes, seconds, month, date, day Water Resistant : 100 Meter 10 Bar Case diameter : 48.9 x 14.4 mm Three Fold Clasp With Push Button Release Scratch Resistant Mineral Glass Auto Electro-luminescent backlight with afterglow Duplex LC Display Digital Compass Graphic direction pointer Barometer Display range: 260 to 1,100 hPa (7.65 to 32.45 inHg) Display unit: 1 hPa (0.05 inHg) Altimeter Measuring range: -700 to 10,000 m Measuring unit: 5 m (20 ft.) Atmospheric pressure tendency graph Atmospheric pressure differential graphic Thermometer Display range: -10 to 60° C (14 to 140° F ) Display unit: 0.1° C (0.2° F ) World Time (29 Time Zones, 30 Cities) 1/100 Sec Stopwatch : 9:59’59.99” Measuring mode: Elapsed time, split time, 1st-2nd place times Countdown timer : 1 Sec to 60 minutes 5 Daily alarm Hourly time signal Battery power indicator Power save function Auto-calendar (to year 2099) 12/24-hour formats Accuracy: ± 15 Seconds per Month Solar Powered Appro Battery Life: 6 months on Rechargeable Module 3057 Weight : 118g
I’ve been using my Casio Pro-trek PRG-90T for 5 years now and it has impressed me very much. There are a wealth of features (some of them I haven’t tried yet) but the most important features I have used in the field are the compass, barometric pressure, altimeter and the tough solar wherein the watch automatically charges its batteries when it is exposed to light. No need to change batteries for the next several years!!!
This watch is tough!!! Mine already has several scratches, a testament to the several climbs I’ve done with it. The titanium construction is great, if not the best. It has withstood climbs with heavy rains, winds, rocky and slippery trails. I have friends who use other brand watches with rubber construction but they ended up putting their watches in their cabinets as the rubber did not last long.
I would highly recommend this watch to anyone who wants to have a multi-function mountaineering and expedition watch.
Personally I give it a 5-out-of-5 stars!!!