311.30.42.30.01.005
Discontinued
Omega · Speedmaster
Speedmaster Professional Moonwatch
- Diameter
- 42 mm
- Movement
- Manual
Omega caliber
Sourced specifications: manual winding, 48-hour power reserve, 21,600 vph, and 18 jewels. Watchfari lists 1 reference using the Omega 1861. Every sourced case diameter here is 42 mm. Every sourced movement here is manual. All sourced cases are stainless steel.
Omega · Speedmaster