As a hobby, I do astronomy at night and also run a lot. For work I travel internationally now and then. This watch satisfies my various needs very well. This is my 8th Casio watch, and they tend to be very well made. My old G-Shock which I purchased a week before I entered the army lasted about 35 years, strap and all. That's pretty amazing. This is not as sturdy as the G-Shocks, but it is well made enough.

Pluses:
-nice big hands, with luminous paint.
-lighted small window to see the time without destroying your night vision
-temperature, compass and world time settings
-strap is easy to put on

Minuses:
-strap gets a bit uncomfortable when worn long- it tends to get sweaty and hot under the strap.

Note: do keep the instruction booklet. Like all the feature rich Casios, the programming is not intuitive and will be very hard to figure out if you loose the booklet!