Seamaster Aqua Terra 150M 38 mm, steel ‑ Sedna™ gold on leather strap

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Steel ‑ Sedna™ gold on leather strap

38 mm, steel ‑ Sedna™ gold on leather strap

Details Seamaster 38 mm, steel - Sedna™ gold on leather strap - 220.23.38.20.60.001 Details
Steel ‑ Sedna™ gold on leather strap

38 mm, steel ‑ Sedna™ gold on leather strap

Details Seamaster 38 mm, steel - Sedna™ gold on leather strap - 220.23.38.20.59.001 Details
Steel ‑ Sedna™ gold on steel ‑ Sedna™ gold

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

Details Seamaster 38 mm, steel - Sedna™ gold on steel - Sedna™ gold - 220.20.38.20.55.002 Details
Steel ‑ Sedna™ gold on steel ‑ Sedna™ gold

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

Details Seamaster 38 mm, steel - Sedna™ gold on steel - Sedna™ gold - 220.20.38.20.10.001 Details
Sedna™ gold on leather strap

38 mm, Sedna™ gold on leather strap

Details Seamaster 38 mm, Sedna™ gold on leather strap - 220.58.38.20.55.002 Details
Sedna™ gold on Sedna™ gold

38 mm, Sedna™ gold on Sedna™ gold

Details Seamaster 38 mm, Sedna™ gold on Sedna™ gold - 220.55.38.20.99.001 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. In this 38 mm model, the symmetrical case has been crafted from 18K Sedna™ gold and stainless steel, with a wave-edged design featured on the caseback.

The sun-brushed light green dial is distinguished by a date window at 6H and a Small Seconds subdial featuring an 18K Sedna™ gold ring set with diamonds. The design is further complemented by 18K Sedna™ gold hands filled with white Super-LumiNova, as well as incremental diamond indexes that are set in 18K Sedna™ gold holders.

Presented on a green leather strap, this timepiece is powered by the OMEGA Co-Axial Master Chronometer calibre 8802, certified at the industry’s highest standard by the Swiss Federal Institute of Metrology (METAS).

Reference: 220.23.38.20.60.001
Between lugs Open Case Measurement Modal: 19 mm
Lug‑to‑lug Open Case Measurement Modal: 45.0 mm
Thickness Open Case Measurement Modal: 12.7 mm
Case diameter Open Case Measurement Modal: 38 mm
Case: Steel ‑ Sedna™ gold
Dial colour: Green
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.): 84 g
Calibre: OMEGA 8802
Type: Self winding
Power reserve: 55 hours

Strap color: Grey
Strap type: Leather strap
Strap surface: Alligator leather
Strap underside: Calf leather
Buckle type: Foldover clasp
Buckle material: Stainless steel

Product sheet

Key materials

Sedna^TM Gold
Diamonds
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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Diamonds

Diamond is recognised as the hardest material on Earth, graded 10 on the Mohs hardness scale, and is the only gem made entirely of carbon. In nature, it can only be formed under high temperature and pressure conditions that exist within a specific depth range (~100 miles) beneath the Earth's surface. To decorate its timepieces and jewellery, OMEGA uses "Top Wesselton" white COLOUR diamonds with CLARITY ranging from pure to VVS (Very Very Small inclusions). Along with choosing the best weight in CARAT, the CUT is also carefully selected in order to maximise brightness and scintillation. It goes without saying that OMEGA is a certified member of the non-profit Responsible Jewellery Council (RJC), assuring customers that its processes involving people, materials and the environment are ethical and fair.
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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.

Diamonds

Diamond is recognised as the hardest material on Earth, graded 10 on the Mohs hardness scale, and is the only gem made entirely of carbon. In nature, it can only be formed under high temperature and pressure conditions that exist within a specific depth range (~100 miles) beneath the Earth's surface. To decorate its timepieces and jewellery, OMEGA uses "Top Wesselton" white COLOUR diamonds with CLARITY ranging from pure to VVS (Very Very Small inclusions). Along with choosing the best weight in CARAT, the CUT is also carefully selected in order to maximise brightness and scintillation. It goes without saying that OMEGA is a certified member of the non-profit Responsible Jewellery Council (RJC), assuring customers that its processes involving people, materials and the environment are ethical and fair.

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.

A new look for your watch

Your watch and strap should go together perfectly, but that doesn't mean you can't experiment with different combinations. Why not mix things up and see what happens? You may discover a look that's as individual as you are.

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/+6 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 8802

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, automatic winding in both directions. Small Seconds display at 6H. Rhodium-plated rotor and balance bridge with Geneva waves in arabesque.