Breitling Men's A1335611/A569 Chronomat Evolution 746 Watch Quality Swiss Automatic movement; Functions without a battery; Powers automatically with the movement of your arm Scratch-resistant-sapphire crystal Case diameter: 43.3 mm Stainless-steel case; Mother-of-pearl dial; Date function; Chronograph functions Water resistant to 990 feet (300 M):suitable for scuba diving to a depth of 30 meters for up to 2 hours