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. :
CASE CASIO F-15 - Caja Reloj Casio F-15 -Casio Vintage Watch - Made In Japan ⌚⌚ EUR 24,00 - PicClick IT