Description: Omega Speedmaster Moonwatch Professional Pre-owned Omega Speedmaster Moonwatch Professional ref 310.30.42.50.01.002. The Moonwatch earned its place in horology by being part of all six Apollo moon landings, and it’s been tied to space exploration ever since. That story is baked into the design, not added on for marketing, and it’s a big reason the Speedy still resonates with passionate collectors, decades later. This 42mm stainless steel version stays