Beamer wrote a review of Casio Protrek PAW1300 Altimeter Watch on December 13, 2010
I have had this watch for about 2 years now and it has served me very well. It is a little banged up but still looks good, and all of the functionality works. I use the alitimeter a lot as I live in Colorado. Sometimes the barometer reading gets funky if I travel to sea level by plane, but it is easy to reset.
All in all I love this watch. A little pricey but worth it if you like gadgets and big, rugged watches.