321.30.44.52.01.001Ref

This Speedmaster has a black dial protected by a scratch-resistant sapphire crystal, with thirty-minute and 12-hour recorders, a 7-day totalizer, a small seconds dial, and a day indicator housed in the five Olympic Rings on the dial. The tachymetric bezel sits on a 44.25 mm stainless steel case, presented on a black leather strap and powered by the Co-Axial calibre 3888; this is the Omega Olympic Collection Chronograph ref 321.30.44.52.01.001.