Isobrite Valor Swiss T100 Tritium Illuminated Chronograph Silicone. The trajectory of light from the new longer tubes not only assist and enhance with night vision read capabilities but also offer a higher quality and aesthetically pleasing timepiece. The Ronda 5040.D movement in this Swiss made chronograph assures the accuracy your mission requires with the added feature of a stopwatch. Whether you are an aircraft/vessel pilot auto racer diver at the controls of a submarine or just a regular guy this timepiece will assure you are properly equipped. When your adventure involves going deep this diving-approved watch is water-resistant to 200 meters. Constructed out of lightweight carbon fiber reinforced polycarbonate and scratch-resistant sapphire crystal the watch weighs in at only 3 ounces. Plus the included silicone strap provides the utmost in comfort and adaptability. Specifications for Isobrite Valor Swiss T100 Tritium Illuminated Chronograph: Manufacturer: Isobrite Application: All Round Gender: Male Dial Color: Black Band/Strap Color: Black Case Color: Black Case Material: 316L Surgical-Quality Stainless Steel Case Diameter: 47 mm Bezel Finish: Tritium Wrist Band Type: Strap Illumination Type: Tritium Package Contents: Isobrite Valor Swiss T100 Tritium Illuminated Chronograph Isobrite Valor Swiss T100 Tritium Illuminated Chronograph - ISO403