Luminox is the Official Partner of Bear Grylls CARBONOX™ watch case Origin Swiss Made Always Visible Constant glow for up to 25 years in any light condition Size/Diameter 45mm Water Resistance 300 meters, 30 ATM, 1000 feet, individually tested Movement Ronda 5030.D Battery/Battery life 395 / 50 months Case CARBONOX™+ Bezel CARBONOX™+, uni-directional turning bezel, count-up and compass Case back 316L stainless steel, screw in Crystal Sapphire with anti-reflection coating Crown 316L stainless steel Height 14mm Weight 98gr 2 Year Limited Warranty 10 Year Warranty for Tritium Tubes