Speedmaster Professional Moonwatch 3870.50.31 Reference 3870.
Speedmaster Professional Moonwatch
Overview
The Omega Speedmaster Professional Moonwatch 3870.50.31 comes in a 42 mm steel case with a black dial. Inside is the manual-winding Omega calibre 1861, which has a 48 hour power reserve. The watch is water resistant to 50 metres. One reference is listed, 3870.50.31.
- Case diameter
- 42 mm
- 13.8 mm thick
- Movement
- Calibre 1861
- Water resistance
- 50 m
- Power reserve
- 48 h
Specifications
Specifications from Omega and WatchBase. Last checked . SourcesNot yet recorded: lug-to-lug, case back, shape, indexes, hands, functions, years.
Speedmaster Professional Moonwatch 3870.50.31 questions
What size is the Omega Speedmaster Professional Moonwatch 3870.50.31?
The Omega Speedmaster Professional Moonwatch 3870.50.31 has a 42 mm case.
What movement does the Omega Speedmaster Professional Moonwatch 3870.50.31 use?
It uses the Omega calibre 1861.
What is the Omega Speedmaster Professional Moonwatch 3870.50.31 case made of?
The case is steel.
Is the Omega Speedmaster Professional Moonwatch 3870.50.31 water resistant?
It is rated to 50 m.
About the Omega Speedmaster Moonwatch
Omega introduced the Speedmaster in 1957 as a sports and racing chronograph. The first model, the CK 2915, used the calibre 321 movement and carried its tachymeter scale on the bezel. Wally Schirra wore his own Speedmaster on the Mercury mission of October 1962, and in 1965 NASA qualified the watch for all manned space missions after a series of tests. It was worn on the lunar surface during Apollo 11 in July 1969. The current Moonwatch Professional has a 42mm asymmetrical case, a black step dial, a tachymeter bezel and the manual-winding Co-Axial calibre 3861, certified as a Master Chronometer by METAS.
