ProTek is a brand of tritium tactical watches. ProTek is designed for Law Enforcement, Fire Fighters, SWAT, Tactical, Military, Special Forces, and First Responders. ProTek is a no-excuses brand that is Rugged at Heart and built to handle what life demands in any environment, lending credence to the tag line All Terrain Watches. Specifications: 42mm 316L Stainless Steel Case and Embossed Screw Caseback, Unidirectional 120-Click Dive Timing Bezel, Steel Screw Crown with Multiple O-Rings, Sapphire Crystal with Antireflective Coating, Water Resistant to 200 Meters, Solid Link Stainless Steel Bracelet (22mm x 20mm), Dependable Japanese AUTOMATIC NH35 Seiko 3 Hand & Date Movement, Swiss self-powered ProGlo illumination system is 100X brighter than conventional lume and glows continuously for 25 years without a need to be "charged" by an external light source.