I only have to change the time zone when I travel, which can be done at the push of a button.
It's waterproof and does the things most digital watches do (alarms, stopwatch, etc.). It also has a compass, barometer, altimeter, and thermometer, all of which get used when I go backpacking. The compass gets used the most. The barometer is good for predicting weather changes.
I have one small gripe about this watch. It recently needed to be repaired because it displayed “OPEN” on the front. A metal plate inside had shifted. I was able to fix it easily with a PH000 screwdriver.
Its a very tough watch that has been through a lot. After 5 years I still enjoy it immensely. -- Carl Mixon