I bought this watch a week ago (not from Amazon) and am still trying to learn how to use its features.  My main problem so far is that the watch is water-resistant only when its crown is pushed down.  Although it is probably not possible to pull the crown out accidentally, this possibility does make me reluctant to wear the watch when swimming.  The watch should have a screw-down crown, which would make me more confident that it would not leak.

Its claimed reception range for radio-controlled timekeeping is much greater than the range claimed in the manuals for Casio "atomic" watches, of which I have several. I cannot test this easily myself as I live very close to the USA transmitter at Ft. Collins, Colorado. I would be interested in any comments about the reception range of this watch.

Edited 5/2/2012 - Upgraded to four stars - the water-resistant crown doesn't seem to be a problem when swimming or hot-tubbing.  Further, while in the Normandy region of France, the watch successfuly received signals from the time-stations in Germany.