Mens Creative Tritium Luminous Military Sports Waterproof Quartz Watches Full Black Steel Watches Fashion design for men, tritium trachea clearly display the time at night Tritium light watch,constant glow for up 25years Upgraded version of the Swiss movement Stainless steel case and band, synthetic sapphire glass, high-quality quartz movement from Japan The powerful features and super waterproof design ideal for outdoor sports and work at night, and as a gift