This diver's watch is a modern reinterpretation of Seiko's groundbreaking 1982 "Hybrid diver's" model, known as the 'Arnie' for its association with the actor in the film 'Commando' and nicknamed 'Tuna' by Seiko fans due to its bold, tuna tin-like shape. It celebrates the 40th anniversary of the world's first hybrid diver's watch with an alarm chronograph, which proved its reliability in extreme conditions like the Japanese Antarctic Research Expedition in 1984 and the Joint Mount Everest Challenge in 1988. Powered by the new calibre H855 quartz solar movement. • Powered by the solar powered movement. • Presented on a black plastic strap with traditional buckle. • Hardlex glass. • 46.9mm case width. • 200 metre water resistance.