I bought a bunch of Casio from a recycling company. Under them was this vintage DW-9000 (in near mint condition). New battery and it's runs flawlessly. I paid 40€ for 11 watches,
2 Casio G-shock DW-9000 (Jelly and Triple Crown of Surfing) - myWatchMart
FS: Casio, G-Shock, DW-9000, Module 1659 in Blue and Yellow.