Seamaster Aqua Terra 150M 41 mm, steel ‑ Sedna™ gold on steel ‑ Sedna™ gold

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Steel ‑ Sedna™ gold on steel ‑ Sedna™ gold

41 mm, steel ‑ Sedna™ gold on steel ‑ Sedna™ gold

Details Seamaster 41 mm, steel - Sedna™ gold on steel - Sedna™ gold - 220.20.41.21.02.001 Details
Sedna™ gold on Sedna™ gold

41 mm, Sedna™ gold on Sedna™ gold

Details Seamaster 41 mm, Sedna™ gold on Sedna™ gold - 220.50.41.21.02.001 Details
Titanium on rubber strap

41 mm, titanium on rubber strap

Details Seamaster 41 mm, titanium on rubber strap - 220.92.41.21.06.001 Details
Titanium on rubber strap

41 mm, titanium on rubber strap

Details Seamaster 41 mm, titanium on rubber strap - 220.92.41.21.06.002 Details
Titanium on rubber strap

41 mm, titanium on rubber strap

Details Seamaster 41 mm, titanium on rubber strap - 220.92.41.21.06.003 Details
Steel on rubber strap

41 mm, steel on rubber strap

Details Seamaster 41 mm, steel on rubber strap - 220.12.41.21.02.002 Details

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 Seamaster Aqua Terra is a superb tribute to OMEGA’s rich maritime heritage. This 41mm model has a symmetrical polished-brushed case in stainless steel and 18K Sedna™ gold, and a screw-in caseback with a wave-edged design.

The silvery sun-brushed dial has a horizontal “teak” pattern inspired by the wooden decks of luxury sailboats, which is a signature feature of these models. Keeping track of the hours, minutes and seconds are facetted hands in 18K Sedna™ gold, filled with white Super-LumiNova. Days are marked by a date window at 6 o'clock.

Matching perfectly with the case is a stainless steel and 18K Sedna™ gold bracelet. Powering the watch is OMEGA’s Master Chronometer calibre 8900 - certified at the industry’s highest level by the Swiss Federal Institute of Metrology (METAS).

Reference: 220.20.41.21.02.001
Between lugs Open Case Measurement Modal: 20 mm
Lug‑to‑lug Open Case Measurement Modal: 47.9 mm
Thickness Open Case Measurement Modal: 13.2 mm
Case diameter Open Case Measurement Modal: 41 mm
Case: Steel ‑ Sedna™ gold
Dial colour: Silver
Crystal: Domed scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides
Water resistance: 15 bar (150 metres / 500 feet)
Total product weight (approx.): 165 g
Calibre: Omega 8900
Type: Self winding
Power reserve: 60 hours

Material: Steel ‑ Sedna™ gold
Type of Clasp: Butterfly clasp

Product sheet

Key materials

Sedna^TM Gold
Stainless Steel
Sapphire Crystal

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Sedna^TM Gold

OMEGA has been using the exclusive 18K Sedna^TM Gold, its own fiery rose gold alloy, since 2012. Named after Sedna, an orbiting planetoid that has been described as one of the reddest in the solar system, Sedna^TM Gold not only bears all the standard characteristics of other 18K golds, but it also offers high resistance to the fading of colour and lustre over time. Its unique composition includes copper and palladium for colour and stability.
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Stainless Steel

Stainless steel is certainly the most conventional of watchmaking materials for outer craftsmanship, and offers beauty, strength and affordability. OMEGA uses 316L stainless steel. Known for its corrosion-resistance and high lustre after polishing, this material is often the ideal choice for watches in both daily-use and high-stress situations such as diving and adventure.
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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.

Sedna^TM Gold

OMEGA has been using the exclusive 18K Sedna^TM Gold, its own fiery rose gold alloy, since 2012. Named after Sedna, an orbiting planetoid that has been described as one of the reddest in the solar system, Sedna^TM Gold not only bears all the standard characteristics of other 18K golds, but it also offers high resistance to the fading of colour and lustre over time. Its unique composition includes copper and palladium for colour and stability.

Stainless Steel

Stainless steel is certainly the most conventional of watchmaking materials for outer craftsmanship, and offers beauty, strength and affordability. OMEGA uses 316L stainless steel. Known for its corrosion-resistance and high lustre after polishing, this material is often the ideal choice for watches in both daily-use and high-stress situations such as diving and adventure.

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

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.

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Master Chronometer Certified

Superior Precision

Twice as precise as any officially certified chronometer

Our Master Chronometer watches are tested and certified twice. First, the movement is Chronometer-certified according to international standard ISO3159, requiring a precision of -4/+6 second per day, following the tests at the Official Swiss Chronometer Control (COSC). Then, the watch head and its movement undergo eight Master Chronometer tests set by the Swiss Federal Institute of Metrology (METAS) with criteria of 0/+5 seconds per day.

Discover more about Master Chronometer
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Master Chronometer Certified

Anti-Magnetic

Proprietary anti-magnetic materials

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.

Discover more about Master Chronometer
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Master Chronometer Certified

Water-resistance

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.

Discover more about Master Chronometer
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5-Year Warranty

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.

Movement Calibre OMEGA 8900

Self-winding movement with Co-Axial escapement. 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. Time zone function. Special luxury finish with rhodium-plated rotor and bridges with Geneva waves in arabesque.