Review on CASIO Pro Trek PRW-30-1A quartz watch, built-in memory, alarm clock, chronograph, thermometer, barometer, compass, altimeter, stopwatch, countdown timer, frost resistance, waterproof, power reserve indicator, display backlight by Dimitar Manolov ᠌

I climbed Elbrus while wearing a watch; all of the requirements were satisfied. During the course of the climb, we discovered that the height indication is approximately five percent off from the actual amount. With its positives being: Simple to use, almost impossible to discharge, compact in size, and versatile in its application Cons: The compass, altimeter, and barometer all work essentially the same. It is difficult to adjust to the "unlikely" pressure that is being measured. After another half a year, they are 10 seconds ahead of the current time, which means that an adjustment is required.