The Omega Speedmaster 57 Co Axial Master Chronometer Chronograph 40 5mm is a 40.5 mm watch from the Speedmaster collection. Its stainless steel case is 12.99 mm thick and 49.64 mm from lug to lug, with 20 mm lugs. It is water resistant to 50 m. The crystal is sapphire.

The manufacturer’s list price is US$10,300. It comes in 6 versions, with blue, black and green dials.