My uncles ≈20 year old G-Shock! From what I've found online, it is a DW-002. It's not a G-Line or an Xtreme edition, so I can't find the exact name of it.
Casio G-SHOCK DW-002/ DW-003/ DW-004 | G shock watches mens, Casio watch, Casio g shock
CASIO G-SHOCK DW-002 Black Roppongi R Hall Mens Watch Used 3j18018 | eBay
Casio G-SHOCK DW-002/ DW-003/ DW-004 | Please do not use thi… | Flickr
It's huge, it's made in Japan and it's not a frog. What is it? | WatchUSeek Watch Forums
Vintage Casio G-Shock Digital Fox Fire Quartz Watch DW-002 MOD.1299 G515/116.2 | WatchCharts