Omega Speedmaster Professional Men's Watch 311.30.42.30.13.001

Stainless steel case with a stainless steel bracelet. Fixed black ion-plated bezel with tachymeter. Brown dial with silver tone hands and stick hour markers. Minute markers around the outer rim. Chronograph - three sub-dials displaying: 12 hours, 30 minutes, small seconds. Hand Wind movement. Scratch resistant sapphire crystal. Skeleton case back. Case diameter: 42 mm. Case thickness: 14.3 mm. Push button fold over clasp. Water resistant at 50 meters/ 165 feet. Functions: hours, minutes, seconds, date, chronograph, tachymeter. Omega Speedmaster Professional Men's Watch 311.30.42.30.13.001