Shown: reference 3695.50.31 · Photo: Omega
Omega

Speedmaster Professional Moonwatch 3695.50.31 Reference 3695.50.31

Speedmaster Professional Moonwatch Yellow Gold

Overview

The Omega Speedmaster Professional Moonwatch 3695.50.31 has a 42 mm yellow gold case with a black dial. It runs on the manual-winding Omega calibre 1863 with a 48 hour power reserve and is water resistant to 50 metres. The model has one reference, 3695.50.31. It is no longer in production.

Omega introduced the Speedmaster in 1957 as a sports and racing chronograph. About the Omega Speedmaster Moonwatch

Case diameter
42 mm
Movement
Calibre 1863
Water resistance
50 m
Power reserve
48 h

Specifications

Specifications from Omega and WatchBase. Last checked . Sources

Case

Diameter
42 mm
Lug width
20 mm
Material
Yellow gold
Crystal
Sapphire
Water resistance
50 m
Weight
118 g

Dial

Colour
Black

Movement

Calibre
Omega 1863
Type
Manual winding
Power reserve
48 h

Not yet recorded: thickness, lug-to-lug, case back, shape, indexes, hands, functions, years.

Sources

Missing values are shown as not yet recorded, never estimated. How we source our data

MovementOmega calibre 1863Specifications and every watch that uses it

Speedmaster Professional Moonwatch 3695.50.31 questions

What size is the Omega Speedmaster Professional Moonwatch 3695.50.31?

The Omega Speedmaster Professional Moonwatch 3695.50.31 has a 42 mm case.

What movement does the Omega Speedmaster Professional Moonwatch 3695.50.31 use?

It uses the Omega calibre 1863.

What is the Omega Speedmaster Professional Moonwatch 3695.50.31 case made of?

The case is yellow gold.

Is the Omega Speedmaster Professional Moonwatch 3695.50.31 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.

Sources: Omega: Our Space Legacy, Omega: Speedmaster Moonwatch Professional 310.30.42.50.01.001, Wikipedia: Omega Speedmaster, Christie's: Omega Speedmaster ref. 2915-2