I have a Casio G-Shock solar. I suspect I'll replace it for the same reason I've replaced all the other watches I've owned... something other than the battery fails. Most of the time it's the band, or the buttons, or the case is scratched up, or the o-rings leak, or...

I figure if I get 5 years out of the battery on this one, that'll beat the average by a good year or two. <img src="/images/graemlins/smile.gif" alt="" />