Marathon General Purpose Quartz Wristwatch w/ Tritium No Government Markings Sage Green. The fibershell case of the General Purpose Quartz also has a passive matte finish. This matte finish aids in protecting infantry positions as this finish does not provide a reflective surface which would occur on a normal metal case. Fibershell is also an extremely lightweight material an important factor on the battlefield where every ounce counts. The General Purpose Quartz is made in La Chaux de Fonds Switzerland to provides the highest level of quality and accuracy in manufacturing. Powered by a Swiss made high torque 3 jewel ETA F06 Quartz movement the watch ensures a high degree of accuracy in timekeeping. The ETA F06 is accurate to -0.3/+0.5 seconds per day and also includes an End of Life (EOL) indicator that will advance the seconds hand once every 4 seconds to inform you that a battery change is needed. The General Purpose Quartz uses self-contained Tritium gas tubes to ensure constant visibility in low light situations. A gas tube is placed on each hour marker and hand. 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. Specifications for Marathon General Purpose Quartz Wristwatch w/ Tritium No Government Markings: Manufacturer: Marathon Application: Casual Gender: Unisex Dial Color: Black Case Material: 316L Surgical-Quality Stainless Steel Case Diameter: 34 mm Band/Strap Material: Nylon Wrist Band Type: Strap Movement: Quartz Illumination Type: Tritium Water Resistance Level: Water Resistant Water Resistant Mark: 3 atm Weight: 1 oz Condition: New Country of Origin: Switzerland Features of Marathon General Purpose Quartz Wristwatch w/ Tritium No Government Markings MOVEMENT: High Torque Quartz SCALE QUANTITY: 2 SCALE RANGE: 1-12 (13-14) LUMINOUS FEATURES: Tritium gas tubes CASE: Composite 316L with stainless steel back SUBMERSIBILITY: 3ATM CRYSTAL TYPE: Sapphire CROWN TYPE: Pressure DIMENSIONS: 34mm Diameter / 12mm thicknes Package Contents: Marathon General Purpose Quartz Wristwatch w/ Tritium No Government Markings Instructions Marathon WW194004SG-0803: General Purpose Quartz Wristwatch w/ Tritium No Government Markings Sage Green