« Naval Hero » designs combine topflight quality and certified ruggedness. Equipped with a se1fsinding movement this model’s steel case is fitted with a crown stem with special Bi-O-Ring gasket, a screwed-in back and a sapphire crystal; it is water-resistant to 100 in. The watch’s steel bracelet features a special safety clasp. Available in a choice of versions, with a range of dial colours to choose from.