Isobrite Squadron T100 Tritium Illuminated Automatic Watch Blue. 5mm Isobrite Squadron Series watch features 16 ultra bright T100 tritium markers that will glow for many decades. A combination of green ice blue and orange tritium markers makes it incredibly easy to tell the time in any lighting environment. The 12:00 position is even more noticeable with a photoluminescent glow-in-the-dark triangle with 2 dots. To ensure uninterrupted service the watch is powered by a reliable Japanese NH35 mechanical movement with 24 jewels and a date display. The movement features both manual and automatic winding as well as a power reserve of about 41 hours. Constructed out of carbon fiber reinforced polycarbonate this lightweight watch weighs in at only 2.7 ounces. The dial is well protected by a scratch-resistant sapphire crystal with an anti-reflective coating. When your adventure involves water this watch is ready to accompany you diving down to 200 meters. While in the depths of the sea the 60-click unidirectional ratcheting diver bezel with a tritium marker will help you keep track of elapsed bottom time. Specifications for Isobrite Squadron T100 Tritium Illuminated Automatic Watch: Manufacturer: Isobrite Application: All Round Gender: Male Dial Color: Blue Band/Strap Color: Black Case Color: Black Case Material: 316L Surgical-Quality Stainless Steel Case Diameter: 44.5 mm Bezel Finish: Tritium Band/Strap Material: Polyurethane Wrist Band Type: Strap Illumination Type: Tritium Package Contents: Isobrite Squadron T100 Tritium Illuminated Automatic Watch Isobrite Squadron T100 Tritium Illuminated Automatic Watch Blue - ISO1102-PU