Marathon OSAR-D Watches Rubber Black 41mm. The watch famously featured a mil-spec Type I dial with cyclops date designed with fully-lumed geometric hour markers providing quick legibility and maximum visibility under water or in dark environments. Specifications for Marathon OSAR-D Watches: Manufacturer: Marathon Gender: Unisex Dial Color: Black Marker/Numeral Color: Maraglo Case Finish: Brushed Case Material: 316L Stainless Steel Case Diameter: 41 mm Bezel Finish: Unidirectional Water Resistant Mark: 300 m Watch Type: Casual Watch Features of Marathon OSAR-D Watches: MARAGLO - MaraGlo photo-luminescent paint charges through external light sources. MaraGlo will glow brightly on its own for up to 3-5 hours after light exposure. WATER RESISTANCE - The 41mm OSAR-D is made from 316L surgical-grade stainless-steel with a screw-down crown and a synthetic sapphire crystal that allow it to operate while submerged down to 300 meters or 1000 feet underwater. SHOCK RESISTANCE - For over 80 years Marathon has used Incabloc shock absorbers to protect the Marathon engine. This watch combines military toughness with Swiss craftsmanship in a watch that will get the job done and look good doing it. SWISS CRAFTSMANSHIP - Inside the 41mm OSAR-D automatic is a Swiss-made 26 jewels Sellita SW200-1 with Incabloc Shock Absorber. These watches are hand-assembled in La Chaux-de-Fonds Switzerland and guarantee the highest level of craftsmanship and accuracy. Package Contents: Marathon OSAR-D Watches Marathon WW194006SS-2030: OSAR-D Watches Rubber Black 41mm