Also a Casio fan, having picked up a GWM5600BC Radio Controlled/Solar model in 2010. I'm wearing it to this day, having never changed the battery, taken out through all manner of wet and cold situations. I did sometimes have the problem of the battery running low in winter but switched off the wrist-flick light feature which constantly misfired under-sleeve and haven't had it since. Atomic clock updates daily are the cherry on top. Here's to the next decade!