20-YEARS CONSTANT GLOW: SWW-12T-N is equipped with a tritium light source that provides over 20-years of constant glow and can be viewed in any lighting conditions. The hands have green tritium and the markers at 12, 3, 6 and 9 features the new Orange Tritium, other markers glow in the dark too NEW IMPROVED DESIGN: Has precision quartz Swiss components, screw down stainless steel case back, scratch resistant hardened mineral glass crystal to protect the Thailand movement. A black nylon strap when you’re on the move, 12-/24-hour indicators and date display. WATER RESISTANT: Resistant to water, oil, and the most corrosive materials. The stainless steel case back assures water resistance up to 100-meters (330-feet), which can stand up to the rigors of recreational scuba diving, swimming, snorkeling, and other water sports GREAT GIFT: For family and friends for Anniversary, Valentine's Day, Christmas, Birthday, Graduation, Father's day Gift for Dad, Wedding, Thanksgiving and any other occasion WARRANTY, WEIGHT AND DIMENSIONS: Comes with a 1-year limited warranty, Weight (Oz): 1.60, Face Diameter and Thickness (mm): 43 x 12. Packaged in an elegant gift box. Water resistant to 100-meters (330-feet) A scratch resistant hardened mineral glass crystal protects the dial of the watch Equipped with a tritium light source, which will provide 20 years worth of consistent glow The hands have green tritium and the markers at 12, 3, 6 and 9 features the new Orange Tritium