The Colt Automatic has a tough and functional design, inspired by its roots as a watch for the military. The bezel is satin-brushed and has four rider tabs for easy use and to protect the sapphire crystal, which is glareproof on both sides. The black, blue, or silver dials have a subtle circular pattern. The case is made of polished steel and can withstand water up to 200 meters (660 feet). The screw-locked crown has extra protection. Inside, you'll find a selfwinding movement that is officially certified as a chronometer. One variation, reference A1738811.G791, features a sleek Stratus Silver dial.