The Omega Spacemaster Z-33 is a multi-function quartz chronograph. The unusual oval-shaped, titanium case takes cues from the Flightmaster and other 'Pilot Line' watches from the early 1970's. The movement on the other hand is an evolution of the one found in the original 1998 X-33.
Reference 325.92.43.79.01.001 is fitted with a rubber strap.