The 1:1 clone Speedmaster Moonphase 44.52.01.001 adds astronomical complication to the Moonwatch Professional formula—a moonphase display that tracks lunar cycles with genuine accuracy. Reference 304.30.44.52.01.001 combines the standard chronograph functions with a subdial showing current moon phase, appropriate given the Speedmasters Apollo heritage. This OM Factory replica captures both the mechanical complexity and visual appeal of Omegas moonphase execution.

Moonphase Complication Explained

The moonphase display at 6 oclock shows the moons current illumination phase through a rotating disc beneath an aperture window. A complete lunar cycle takes 29.5 days; the Speedmaster Moonphase 44.52.01.001 tracks this with accuracy requiring adjustment only once every ten years. For a watch commemorating lunar missions, the moonphase complication adds thematic coherence beyond pure chronograph function. OM Factory replicates the starfield background and golden moon disc visible through the aperture.

Clone 9904 Movement

• Caliber: automatic chronograph with moonphase (Cal. 9904 clone)
• Power reserve: 60 hours
• Frequency: 25,200 vph (3.5Hz)
• Functions: hours, minutes, seconds, date, chronograph, moonphase
• Moonphase accuracy: 1 day deviation per 10 years
• Certified chronometer

Dial Layout and Legibility

The blue dial houses three subdials: 12-hour chronograph counter at 3 oclock, running seconds at 9 oclock, and the moonphase display with date ring at 6 oclock. The recessed moonphase window creates visual depth—the starfield background and golden moon appear to float beneath the dial surface. Applied white gold indices and hands provide contrast against the blue ground. This 1:1 clone Speedmaster variant offers more complication than standard Moonwatch models.

Technical Specifications

• Case diameter: 44.25mm
• Case thickness: 16.87mm
• Case material: 316L stainless steel
• Bezel: ceramic with liquidmetal tachymeter
• Dial: blue with moonphase at 6 oclock
• Crystal: sapphire with AR coating
• Water resistance: 100 meters
• Bracelet: stainless steel or leather strap

OM Factory Moonphase Execution

Moonphase complications require precise disc alignment—the moon must appear centered in its aperture at the correct phase. OM Factory calibrates each replica Speedmaster Moonphase before shipping, ensuring the lunar display functions accurately. The starfield background uses micro-printing techniques that create convincing depth when examined closely. For collectors wanting Speedmaster heritage plus astronomical complication, this 44.52.01.001 clone delivers both.

Moonphase vs Standard Moonwatch

The Moonphase variant differs substantially from standard Moonwatch Professional: larger 44.25mm case (vs 42mm), automatic movement (vs manual), date display (vs no date), and obviously the moonphase itself. The chronograph functions identically—both variants offer 12-hour recording capability. Choose standard Moonwatch for compact dimensions and manual winding ritual; choose Moonphase for additional complication and automatic convenience.

Frequently Asked Questions

How accurate is the moonphase on this Speedmaster clone?

The clone mechanism tracks lunar cycles with accuracy requiring adjustment approximately once per year with regular use. Genuine caliber 9904 achieves 10-year accuracy; the clone approaches but does not match this precision.

What size is the Speedmaster Moonphase 44.52.01.001?

44.25mm diameter—larger than the standard 42mm Moonwatch Professional. The increased size accommodates the additional moonphase mechanism and maintains proportional dial spacing.

Is this 1:1 clone Speedmaster automatic or manual wind?

Automatic. The clone Cal. 9904 features a tungsten rotor providing 60 hours power reserve. Manual winding remains possible via the crown.

Does the moonphase need setting?

Yes. After power depletion or initial receipt, set the moonphase to current lunar phase using the crown. Instructions included. Once set, the display tracks automatically.