Wrist Armor Men's WA121G C2 Stainless Steel Analog Display Swiss Quartz Watch with Tritium Markers and Blue Silicone Strap Swiss analog quartz movement 44 mm stainless steel case, tritium powered markers, uni-directional rotating bezel and screw-down crown K1 shatterproof crystal A percentage of every Wrist Armor watch sold is donated to the United States military Water resistant to 660 feet (200 M): suitable for recreational scuba diving