The Omega Speedmaster Chronoscope Co Axial Master Chronometer Chronograph 43mm is a 43 mm watch from the Speedmaster collection. Its bronze gold case is 12.8 mm thick and 48.6 mm from lug to lug, with 21 mm lugs. It is water resistant to 50 m. The crystal is sapphire.

The manufacturer’s list price is US$19,300. It comes in 3 versions, with silver, brown and gold dials.