Early 80s W-36 Marlin. Had this one a little while, just got around to cleaning and putting a new battery in. In far nicer condition than the $5 it owes me. :
Reloj casio a158wa1q retro - Sold through Direct Sale - 58596649
Lot two Casio watches, Diver Model Marlin W36 and W760, sold for parts project | WatchCharts