I received a Casio atomic watch as a college graduation gift many years ago and after all that time, the band finally and irreparably broke on the main housing.  I didn't hesitate to look for another Casio since my line of work requires very precise time measurement and the atomic calibration feature makes these sorts of watches reasonable references.

The features are excellent, including a very useful "world clock" that allows me to set a second time zone to one of about 30 major city time zones around the globe, with the ability to switch between my second time and my current time with just the tap of a button.  As my job requires me to quickly determine what time it is in other time zones including GMT, this is extremely helpful.  Also included are a traditional stopwatch and a handy countdown timer.

The display is large and easy to read, giving the time in hours, minutes and seconds, as well as the date in mm/dd/yyyy format and the day of the week (MON, TUE, etc) which is handy if you're like me and can never remember what day it is (I work some long days and odd hours!)

I did need to have the wristband adjusted for my relatively small wrists, and as with the previous watch the band can only be shortened to either "too tight" or "a little too loose" so I settled for the latter.  Still it is fairly lightweight considering its construction and I usually don't notice it too much.

The auto-time calibration seems to have a little difficulty finding a good signal here in Georgia, as did my previous watch (which worked far better when I lived in Texas).  Unfortunately it never gets the time when I am at work, since I work in a large concrete building during the overnight hours when the watch automatically searches for an atomic clock signal (12:00 - 5:00 AM).  There is no way to change the times during which it will search for a signal, so I basically have to let it set on my days off.

The nighttime illumination isn't quite as good as the previous model I had, and the display has the odd shortcoming of not being visible when I am wearing my prescription sunglasses (many digital displays have this problem), even though the older model could be seen just fine.

Battery life remains to be seen since I've only had the watch about a month.  My previous Casio WaveCeptor needed a new battery about once every 18 months, which was a little more often than I would have liked, but $20 every 18 months was better than buying a new watch every time it died.

A few things could be better but for the price you just can't beat a watch of this quality.