Marathon Arctic Edition Large Divers Automatic Watches NGM Marathon Logo Bracelet White Dial 41mm Diameter / 14mm Thickness. Designed for use by Search and Rescue (SAR) divers and issued to the United States Marine Corps the Divers Automatic is a watch built to withstand the most extreme conditions. The Divers Automatic is also known as the Government Search and Rescue (GSAR). The Divers watch is water resistant down to 30 ATM - 300 meters (1000 feet) underwater. Built from 316L surgical grade stainless steel the watch is a high quality purpose built watch that will reliably accompany you wherever you take it. It uses a scratch resistant sapphire glass crystal to ensure that the dial can be read even under direct sunlight or deep underwater. The Divers Automatic is made in La Chaux de Fonds Switzerland to guarantee the highest level of quality and accuracy in manufacturing. Inside the Divers Automatic is a Swiss Made 26 Jewel Marathon M2 automatic movement made by Sellita that guarantees you a reliable and accurate timekeeping experience. The Divers Automatic uses self contained Tritium gas tubes to ensure constant visibility in low light situations. A gas tube is placed on each hour marker each hand and uses MaraGlo for the 12 hour bezel marker. Tritium tubes are self illuminating gas tubes which contain an isotope of hydrogen meaning they will not dull down in brightness like normal photo-luminescent paint which requires an external light source to create a glow. This watch combines Military toughness with Swiss craftsmanship in a watch that will get the job done and look good doing it. Specifications for Marathon Arctic Edition Large Divers Automatic Watches Bracelet: Manufacturer: Marathon Gender: Unisex Dial Color: White Illumination Color: Green Band/Strap Color: Steel Case Color: Steel Case Material: 316L Surgical-Quality Stainless Steel Case Diameter: 41 mm Bezel Finish: MaraGlo Band/Strap Material: Stainless Steel Wrist Band Type: Bracelet Movement: Automatic Illumination Type: Tritium Water Resistance Level: Waterproof Water Resistant Mark: 30 atm Condition: New Country of Origin: Switzerland Features of Marathon Arctic Edition Large Divers Automatic Watches Bracelet MIL-SPEC: Manufactured in accordance with US Government Specification. Issued and worn by troops in Iraq and Afghanistan. TRITIUM GAS TUBES: Self illuminated 24/7 tritium gas tubes for up to 25 years. SEARCH & RESCUE: Designed for Search And Rescue missions. SWISS MADE: Proudly hand made in La Chaux de Fonds Switzerland since 1939. NSN NUMBER: Nato Stock Number 6645-21-558-0133 engraved on case back. Package Contents: Marathon Arctic Edition Large Divers Automatic Watches Bracelet Marathon WW194006SS-0513: Arctic Edition Large Divers Automatic Watches NGM Marathon Logo Bracelet White Dial 41mm Diameter / 14mm Thickness