The Citizen Promaster Automatic Diver NY0100-50ME dive watch is ISO6425 -certified and ideal for professional divers and weekend enthusiasts alike. The diving watch has a wide range of functions and durable physical characteristics. The 200 m water resistance class watch has an 8203 automatic movement. The Super Titanium case is 42 mm wide and the blue dial is protected by a mineral glass. Super Titanium is Citizen's patented, virtually scratch-resistant titanium coating, which is five times harder and 40% lighter than steel. In addition, the Super Titanium treated case is nickel and allergy free.