Super Rare Casio F-15 Blue/Red model 1988, the brother to the white model, equally as rare, this is 1 of only two I've ever seen and is used but in great condition. :
Any help possible? casio F-15, new battery but blank screen | WatchUSeek Watch Forums
Casio F-15 Japan case - module and pins.The back is mising.Very rare... | eBay