Recently got this Casio C-801 from my grandpa. : r/casiovintage
casio C801 calculator watch mens vintage 80s lcd chronograph light rare as can b | WatchCharts
Casio C-801] The god of the god tier? : r/Watches
Vintage Watch Hunter - We've got a beautiful Casio C-801 in steel for sale this week. This watch is exceedingly rare and one of the first calculator watches in the world. DM
Casio C801 keep or give back | WatchUSeek Watch Forums
CASIO C-801 JAPAN MENS WRIST WATCH FOR PARTS/REPAIR. | eBay