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Omega Speedmaster Moonphase Co-Axial Master Chronometer Chronograph

The Omega Speedmaster Moonphase brings one of OMEGA’s most recognizable chronograph designs together with an intricate moonphase complication. The collection incorporates a realistic moonphase display at 6 o’clock, while the chronograph layout provides the sporty character associated with the Speedmaster family.

The combination of mechanical functionality, space-inspired design, and Master Chronometer certification makes this an especially distinctive choice for enthusiasts who appreciate technically sophisticated Swiss watches.

Signature Speedmaster Design

The Omega Speedmaster Moonphase Chronograph retains the familiar Speedmaster visual language, including a round case, chronograph pushers, subdial configuration, and tachymeter bezel.

The design balances sporty functionality with a refined luxury appearance, making the watch suitable for both collectors and customers looking for a versatile high-end chronograph.

Moonphase Display

The defining feature of the Omega Moonphase Watch is its detailed moonphase indication positioned at 6 o’clock.

OMEGA’s Moonphase models use a highly detailed representation of the lunar surface, with the moonphase function designed to track the changing phases of the Moon. The display gives the chronograph a more sophisticated astronomical character than a conventional sports watch.

Co-Axial Master Chronometer Calibre 9904

At the heart of the verified 44.25 mm Moonphase models is the OMEGA Co-Axial Master Chronometer Calibre 9904.

This self-winding chronograph movement operates at 4 Hz and provides approximately 60 hours of power reserve. It incorporates a column-wheel chronograph, Co-Axial escapement, date indication, 12-hour and 60-minute recorders, small seconds, and moonphase functionality.

The movement is also certified as a Master Chronometer by METAS and is resistant to magnetic fields reaching 15,000 gauss.

Chronograph and Tachymeter Functionality

The chronograph allows the wearer to measure elapsed time, while the tachymeter scale around the bezel adds another functional element to the Speedmaster’s racing-inspired design.

Together, these features preserve the practical, performance-oriented identity that has long been associated with the Speedmaster collection.

44.25 mm Luxury Case

The verified stainless-steel reference 304.30.44.52.01.001 features a 44.25 mm case, approximately 16.85 mm thick, with a 21 mm lug width. It uses scratch-resistant sapphire crystal with anti-reflective treatment on both sides.

The large case creates a substantial wrist presence while providing enough surface area for the complex chronograph and moonphase display.

Water Resistance and Everyday Wear

The steel reference is rated to 10 bar / 100 metres, providing useful everyday water resistance.

As with any mechanical luxury watch, water resistance should be maintained through appropriate servicing and inspection, particularly if the watch is regularly exposed to water.

Key Features

• Omega Speedmaster Moonphase design
• Co-Axial Master Chronometer Calibre 9904
• Self-winding automatic movement
• Approximately 60-hour power reserve
• 44.25 mm case
• Moonphase display
• Chronograph function
• 12-hour and 60-minute recorders
• Small seconds
• Date indication
• Tachymeter scale
• Master Chronometer certification
• Anti-magnetic resistance to 15,000 gauss
• Scratch-resistant sapphire crystal
• Transparent caseback
• 100 m water resistance on verified steel reference
• Swiss luxury sports-watch styling