This Speedmaster model features a black dial with a scratch-resistant sapphire crystal. Thirty-minute and 12-hour recorders, a 7-day totalizer, a small seconds dial and a day indicator can be found in the five Olympic Rings on the dial. The bezel, with its tachymetric scale, is mounted on a 44.25 mm stainless steel case and is presented on a black leather strap. This chronograph is powered by the Co-Axial calibre 3888.Omega Olympic Collection Chronograph ref 321.30.44.52.01.001
