Omega Speedmaster Reduced 3510.50.00 Men's Watch. 39mm Stainless Steel case with a tachymeter bezel. Black dial with luminous hands and index hour markers. Three chronograph subdials with a small seconds subdial, 30 minutes and 12 hours. Stainless steel bracelet with a fold-over clasp. Will fit up to a 6.5-inch wrist. Automatic self-winding movement. Acrylic glass, solid case back. Original box and papers included This watch is backed by our two year warranty.