Omega Moonphase Co‑Axial Master Chronometer Moonphase Chronograph 44.25 mm
304.33.44.52.03.001
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A modern reinterpretation of an icon, the OMEGA Speedmaster Moonphase Chronograph brings celestial precision to the wrist. Housed in a 44.25mm stainless steel case, this sophisticated timepiece features a captivating sun-brushed blue dial with twin sub-dials, a date hand, and a stunning moonphase complication—realistically depicting the lunar surface. The blue ceramic bezel with Liquidmetal™ tachymeter scale adds sporty refinement, while a blue leather strap enhances its classic appeal. Powered by the Co-Axial Master Chronometer Calibre 9904, the watch is METAS-certified for superior chronometric performance and magnetic resistance. Designed for those who appreciate the harmony of heritage and innovation, this Speedmaster offers both high functionality and poetic elegance—making it a standout choice for space enthusiasts and horology aficionados alike.
Full Specification
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Brand OmegaCollectionSpeedmasterSeriesTwo CountersModel No304.33.44.52.03.001
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MovementFeatures Chronograph, Moon Phase, Retrograde Date, Small Seconds, TachymeterMovement AutomaticCalibre 9904CaseCase Size 44.25 mmCase Thickness 16.9 mmCase Shape RoundCase Material Steel & CeramicCase Back See-through Case BackLug Width 21 mmGlass Material Sapphire CrystalDialLuminosity On Hands, Hour MarkersDial Colour BlueHands PencilIndexes BatonStrapStrap Material LeatherStrap Colour BlueClasp Type Folding ClaspBuckle/Clasp Material SteelOtherEAN 7612586263729Gender MenWater Resistance (M) 100Warranty Period 5 YearsCountry of Origin Switzerland
Collection Video Discover the Speedmaster Collection
About the Omega Speedmaster Collection
Be it the first space watch or the first chronograph under the brand, the Omega Speedmaster collection holds various distinctions under its belt. Launched in 1957, it was originally designed as a chronograph for racing and sports but it soon found its place in history through its association with NASA. By 1965, the Speedmaster had passed rigorous testing and was officially "Flight Qualified for All Manned Space Missions." This certification led to its selection as the official watch for NASA astronauts, including during the Apollo 11 mission in 1969, when it became the first watch worn on the moon and remains the only watch certified by NASA for all manned space missions.
Design And Iterations
The Omega Speedmaster Moonwatch Professional is renowned as the only watch certified for Extravehicular Activity (EVA), highlighting Omega's commitment to precision since the original Speedmaster's introduction in 1957. Its design has largely remained consistent, featuring a 42mm stainless steel case, hesalite crystal, and tachymeter bezel, underscoring its enduring legacy and functionality. In contrast, the "Dark Side of The Moon" model, crafted entirely from black ceramic, offers a modern take on the Speedmaster design, paying homage to the Apollo 8 astronauts. The watch combines durability with high-contrast display elements for optimal legibility.
Meanwhile, the Speedmaster '57 Two Counter, introduced in 2013, and the Speedmaster Racing, revived in 2012, celebrate Omega's roots in auto racing with various models featuring vintage-inspired designs and advanced chronograph functions. The Speedmaster 38, with its refined 38mm case and in-house calibre 3330, continues the Speedmaster tradition with enhanced wearability and precision. The Heritage series reinterprets the legacy of the "First Omega in Space" chronograph, combining classic design elements with modern technology across its sub-collections. Notably, the Speedmaster Moonwatch Calibre 321 honours the original Moonwatch by featuring the same movement used in the historic model.

ABOUT THE MOVEMENT
The self-winding calibre 9904 is the beating heart of Omega Speedmaster Moonphase watches, supporting hours, minutes, seconds, date, moon phase, and chronograph functions with a power reserve of 60 hours. It was introduced in 2016 along with 9905 and is based on the architecture of 9300. Subsequently, it features a column-wheel chronograph mechanism. Additionally, it bears a silicon balance spring, a free-sprung balance system and the signature three-level co-axial escapement, proffering magnetic resistance up to 15,000 gauss. Calibre 9904 displays its moon phase indicator at six, repositioning the date function to the chronograph counter at nine. It has a frequency of 28,800 vibrations per hour and is complete with 54 meticulously-placed jewels.

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- Brand Omega
- Reference 9904
- Movement Automatic
- Display Analog
- Base Omega 9300
- Power Reserve approx. 60 hours
- Jewels 54
- Frequency 28800 bph
- Date Date
- Chronograph Chronograph, Column wheel
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