Casio AD-500 80's Yacht timer! Lovely condition considering it's age, currently on a NATO Strap, not really my choice but neither is the bi metal strap. I need to give it some
Casio Yacht Timer : r/casio
Mens AD-500 Vintage Casio Yacht Timer Diver Watch NOS | #454328074
The Top 10 Sailing Watches - The Juice | Ripe Insurance