OMEGA Speedmaster '57

The Omega Speedmaster '57 (reference 332.10.41.51.01.001) has a 40.5 mm steel case with a matching steel bezel and bracelet, paired with a black dial and a sapphire crystal. It is powered by the manual-winding Omega calibre 9906, a Master Chronometer movement offering 60 hours of power reserve, and it includes a chronograph, date display, and small seconds. The case is water resistant to 50 metres.