For its price, this is a spectacular buy. Just a bit of advice, if you need to change the time, pull up the dial used for opening it (not the little rod, but from its base). Not too fast or too slow and it's also the perfect size.

UPDATE 10/2013: It's been about 8 months since I've had this. I haven't replaced any batteries at all and it still functions perfectly-- and this is without even stopping it at any time to try to save battery power. It's been functioning continuously these past months without any glitches and the time has always remained spot on (save for time zone changes that I obviously needed to readjust for). I like using it during my exams by having it sit on my desk (I put the chain on the inside of the lid to keep it standing) so I can just glance up quickly while I'm writing in order to pace myself; personally I like that better than having a wristwatch that I have to stop and turn my wrist around for in order to check the time. If you're looking for something cheap but that does the job, this is more than worth it. Absolutely a great buy and I don't regret it.