This watch gave me a mountain of frustration which I have been climbing since it arrived. It worked for three weeks but defaulted periodically to January 1, 2000 requiring me to reset it. Then after three weeks, the watch face went blank. I reread the manual, recharged the battery, pressed all the right buttons...and nothing,until one day it began to work spontaneously. That was good for another week and then it went blank. Despite repeated efforts to resuscitate it, life never returned. Today, I have ended my struggle and hoisted the white flag. I give up...and have just sent my Pathfinder off to Casio, of course, at my expense. One of the ladies I spoke with this a.m. told me they have periodic problems with watches ordered from Amazon...not sure what to make of this.

UPDATE, August 14, 2011: I sent the watch to the Casio warranty repair center in Southern California. It took several weeks as they needed authorization for me to pay the $9+ in return shipping charges. The watch is now working but the cost of shipping (to and fro)related to its malfunction was an extra $20 on top of the Amazon price. The shop did not note why it was not functioning which I also found strange and, certainly, not customer friendly.

Update, September 4, 2011: I am liking this watch alot and use it most of the time. Would recommend its purchase if you can withstand the possible problems I had.