Brand New Authentic Omega Seamaster Bullhead Co-Axial Chronograph Men’s Watch Model 225.12.43.50.02.001. Stainless Steel case with Black Calfskin Leather strap. Push Button Foldover clasp. Bi-Drectional Rotating bezel. Silver dial. Automatic Chronograph, Chronometer movement. Screw Down crown. Scratch Resistant Sapphire crystal. Case size: 43mm. Solid case back. 150 Meters – 500 Feet water resistant. 5 year WatchMaxx warranty. Also known as model: 22512435002001, 225-12-43-50-02-001, O22512435002001.