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All OMEGA watches are delivered with a 5-year warranty that covers the repair of any material or manufacturing defects. Please refer to the operating instructions for specific information about the warranty conditions and restrictions.
OMEGA is proud to include the Swiss Made mark on all of its watches. This simple wording guarantees a standard of quality established over many centuries and is a world-renowned symbol of excellence.
The Constellation Observatory marks a defining moment in OMEGA’s pursuit of precision.
This 39.4 mm polished-brushed model in 18K Canopus Gold™ features the distinctive faceted “dog-leg” lugs accompanied by a bezel with clear-cut facets. It is presented on a dark blue leather strap on polished buckle.
The “Pie-Pan” dial is a reminiscent of the original 1952 Constellation with dodecagonal facets, with applied OMEGA logo and Constellation star. The 18K Canopus Gold™ dial is presented with crystal finished centre and opaline facets with 8 lustrous hand-guillochégrooves. The revamped kite-form indexes are fully diamond-polished, matched with diamond-polished dauphine hands, crafted from 18K Canopus Gold™ .
The watch is driven by OMEGA’s calibre 8915, the world’s first two-hand watch to achieve Master Chronometer certification approved by METAS. The movement is visible through the sapphire crystal caseback, revealing a 18K Sedna™ Gold skeletonised rotor embellished by an applied medallion featuring the laser-engraved Constellation Observatory emblem in contrasting finish. The watch is presented in a special marquetry box featuring the Constellation Observatory emblem.
Anti-magnetic
The movement is unaffected by exposure to strong magnetic fields, even those greater than 1.5 tesla (15,000 gauss).
Chronometer
Label given to a watch which has been successfully tested by an accredited and independent laboratory in order to receive a certificate compliant with the chronometer ISO 3159 standard.
Master Chronometer Certified
Guaranteeing the Swiss industry’s highest standard of precision, performance and magnetic-resistance, as set by the Swiss Federal Institute of Metrology (METAS).
Time zone function
Allows the hour hand to be easily adjusted to different time zones without stopping the watch.
Transparent caseback
A transparent caseback - frequently made of sapphire - makes it possible to see the movement inside the watch.
Reference
140.53.39.21.99.004
Between lugs
Open Case Measurement Modal
19 mm
Lug‑to‑lug
Open Case Measurement Modal
47.20 mm
Thickness
Open Case Measurement Modal
12.23 mm
Case diameter
Open Case Measurement Modal
39.4 mm
Case
Canopus Gold™
Dial colour
Silver
Crystal
Domed, bevelled and scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides
Water resistance
3 bar (30 metres / 100 feet)
Total product weight (approx.)
105 g
Calibre
OMEGA 8915 Sedna gold
Movement type
Self winding
Power reserve
60 hours
Case Measurements
1. Between lugs
This measures the space where a strap or bracelet would be placed.
2. Lug-to-lug
This is the full length of the case, from the top lugs to the bottom lugs.
3. Case diameter
This is the full width of the watch’s case, excluding the crown and pushers.
4. Thickness
When viewed from the side, this measures from the base of the watch to the surface of the glass.
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The Laboratoire de Précision
The Laboratoire de Précision
The Constellation Observatory is the first two-hand watch tested by the Laboratoire de Précision, an independent certification body certified by METAS and officially accredited by the Swiss Accreditation Service. Using Dual Metric Technology, the Laboratoire captures the acoustic signature of each movement across 25 days of continuous testing, measuring temperature, position, and atmospheric pressure throughout. METAS grants Master Chronometer certification based on the Laboratoire’s measurements.
OMEGA has been using the exclusive Canopus GoldTM, an 18K white gold alloy, since 2015. As well as being 100% noble, it bears all the standard characteristics of other 18K golds, while also distinguishing itself for its high brilliance, whiteness and longevity, making it an ideal material for high-end or diamond set timepieces. The alloy is named after the bright star Canopus, which is 71 times bigger and 10’000 times brighter than our sun. Due to its brilliance and position, Canopus became an important reference point for many space agencies. Its unique composition includes platinum, rhodium and palladium for colour and stability.
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Sapphire Crystal
To really appreciate the finer details of a timepiece, OMEGA uses synthetic sapphire crystal with a highly scratch-resistant and anti-reflective treatment. Before the machining and finishing processes take place, the sapphire crystals are produced under the Verneuil process, also called flame fusion. It involves the melting of the raw substance using oxyhydrogen flame and the crystallisation of the melted droplets to form a cylinder. Graded 9 on the Mohs-hardness scale (graded 1-10), the resulting sapphire crystals are virtually scratch-proof and very hard, ensuring an unhindered vision at all times.
Canopus GoldTM
OMEGA has been using the exclusive Canopus GoldTM, an 18K white gold alloy, since 2015. As well as being 100% noble, it bears all the standard characteristics of other 18K golds, while also distinguishing itself for its high brilliance, whiteness and longevity, making it an ideal material for high-end or diamond set timepieces. The alloy is named after the bright star Canopus, which is 71 times bigger and 10’000 times brighter than our sun. Due to its brilliance and position, Canopus became an important reference point for many space agencies. Its unique composition includes platinum, rhodium and palladium for colour and stability.
Sapphire Crystal
To really appreciate the finer details of a timepiece, OMEGA uses synthetic sapphire crystal with a highly scratch-resistant and anti-reflective treatment. Before the machining and finishing processes take place, the sapphire crystals are produced under the Verneuil process, also called flame fusion. It involves the melting of the raw substance using oxyhydrogen flame and the crystallisation of the melted droplets to form a cylinder. Graded 9 on the Mohs-hardness scale (graded 1-10), the resulting sapphire crystals are virtually scratch-proof and very hard, ensuring an unhindered vision at all times.
The advantages of this watch
The advantages of this watch
Inside this timepiece are the revolutionary components that guarantee the highest standards of performance. From the Co-Axial escapement for long-lasting precision, to the silicon balance spring for superior anti-magnetism, OMEGA has conquered every challenge that matters.
Master Chronometer Certified
Superior Precision
Twice as precise as any officially certified chronometer
Our Master Chronometer watches are tested twice. First, the movement is tested as a chronometer by an accredited and independent laboratory, in accordance with ISO 3159, requiring a precision of -4/+6 seconds per day to achieve chronometer certification. Then, the watch head and its movement undergo eight tests set by the Swiss Federal Institute of Metrology (METAS) with criteria of 0/+5 seconds per day to earn Master Chronometer certification.
Everyday items such as mobile phones, metal clasps on handbags, laptops, MRI, induction hobs or automatic doors; subject a watch to magnetic fields and can affect its performance. To prevent the risk of permanent deviations of up to several minutes a day we've conceived movements with antimagnetic materials, such as the silicon balance spring, capable of withstanding the highest fields.
To ensure the integrity of our timepieces at depth, not just some but all watches are fully immersed in water and pressure is applied up to the point of the guaranteed water resistance. By submerging each watch in water we have chosen – yet again - to exceed normal testing standards.
In our quest to raise industry standards and push the boundaries of quality, all OMEGA watches are offered with a full 5-year warranty. This customer promise shows the confidence we have in the excellence of our timepieces, and provides extra trust and assurance when choosing your watch.
Less servicing
Expect fewer visits to the service centre. The Co-Axial escapement is designed to reduce friction inside the movement. As a result, less lubrication is needed and hence less servicing. Compared to non-Co-Axial watches, the intervals between getting your watch serviced will be much longer.
Shock-resistance
During the homologation process, OMEGA watches are tested to the extreme. This phase includes shock examinations, to confirm reliability and to check that its precision is maintained after a severe impact. All OMEGA timepieces are designed to withstand shocks corresponding to a 1-metre drop on a hard wooden floor. For a standard 150g timepiece, this sudden and rapid acceleration is an equivalent force of up to 5,000 G on the watch head.
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Master Chronometer Certified
Superior Precision
Twice as precise as any officially certified chronometer
Our Master Chronometer watches are tested twice. First, the movement is tested as a chronometer by an accredited and independent laboratory, in accordance with ISO 3159, requiring a precision of -4/+6 seconds per day to achieve chronometer certification. Then, the watch head and its movement undergo eight tests set by the Swiss Federal Institute of Metrology (METAS) with criteria of 0/+5 seconds per day to earn Master Chronometer certification.
Everyday items such as mobile phones, metal clasps on handbags, laptops, MRI, induction hobs or automatic doors; subject a watch to magnetic fields and can affect its performance. To prevent the risk of permanent deviations of up to several minutes a day we've conceived movements with antimagnetic materials, such as the silicon balance spring, capable of withstanding the highest fields.
To ensure the integrity of our timepieces at depth, not just some but all watches are fully immersed in water and pressure is applied up to the point of the guaranteed water resistance. By submerging each watch in water we have chosen – yet again - to exceed normal testing standards.
In our quest to raise industry standards and push the boundaries of quality, all OMEGA watches are offered with a full 5-year warranty. This customer promise shows the confidence we have in the excellence of our timepieces, and provides extra trust and assurance when choosing your watch.
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Less servicing
Expect fewer visits to the service centre. The Co-Axial escapement is designed to reduce friction inside the movement. As a result, less lubrication is needed and hence less servicing. Compared to non-Co-Axial watches, the intervals between getting your watch serviced will be much longer.
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Shock-resistance
During the homologation process, OMEGA watches are tested to the extreme. This phase includes shock examinations, to confirm reliability and to check that its precision is maintained after a severe impact. All OMEGA timepieces are designed to withstand shocks corresponding to a 1-metre drop on a hard wooden floor. For a standard 150g timepiece, this sudden and rapid acceleration is an equivalent force of up to 5,000 G on the watch head.
MovementCalibreOMEGA 8915
Self-winding movement with a Co-Axial escapement. Central hour and minute hands. Time zone function. Certified Master Chronometer, approved by METAS, resistant to magnetic fields reaching 15,000 gauss. Free sprung-balance with silicon balance spring, two barrels mounted in series, automatic winding in both directions. Special luxury finish with 18K Sedna™ Gold rotor and balance bridge with Geneva waves in arabesque, featuring an applied Constellation Observatory motif in a corresponding 18K gold medallion.
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