Stainless steel case with a stainless steel bracelet. Fixed bezel. Black dial with silver-tone hands and index hour markers. Minute markers around the outer rim. Date display appears at the 3 o"clock position. Automatic chronometer movement. Scratch resistant sapphire crystal. Case diameter: 38 mm. Push button fold over clasp. Water resistant at 100 meters/ 330 feet. Functions: hours, minutes, seconds, calendar. Omega Constellation Black Dial Automatic Men"s Watch 123.10.38.21.01.001.