Seamaster Ploprof 1200M Co-Axial Master Chronometer 55 x 45 mm - 227.32.55.21.03.001

Description

This special Ploprof takes its design cues from OMEGA’s 1970s original.

Crafted in O-MEGASTEEL, it has a sun-brushed dial in OMEGA’s own Summer Blue with a gradient finish to reflect the watch’s level of water resistance. The bezel is produced in transparent sapphire crystal, varnished blue on the back, to reveal the light blue diving scale beneath.

The iconic mono-bloc case includes the famous screwed-in crown and the characteristic security pusher at 2 o’clock, which on this edition sports a ring in blue ceramic. In keeping with the colour code, OMEGA has filled the varnished hands and indexes with a unique light blue Super-LumiNova.

Turning the watch over reveals a laser-engraved commemorative Seamaster logo, framed by engraved waves and depicting a trident-bearing Poseidon and two seahorses: OMEGA’s 1956 original and the brand’s current design. Behind which sits the OMEGA Co-Axial Master Chronometer calibre 8912. An original-style blue rubber strap completes the look.

5-Year Warranty

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.

Features

Anti‑magnetic
Bi‑directional rotating bezel
Chronometer
Helium escape valve
Master Chronometer Certified
Screw‑in crown
Time zone function

Case Dial and Crystal Strap

Case

Between lugs: 24 mm
Lug‑to‑lug: 45.0 mm
Thickness: 15.5 mm
Case diameter: 55 x 45 mm
Case: O‑MEGASTEEL
Water resistance: 120 bar (1200 metres / 4000 feet)

Learn more about measurements

Dial and Crystal

Dial colour: Blue
Crystal: Flat scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides

Strap

Strap type: Rubber strap
Strap color: Blue
Strap surface: Rubber
Strap underside: Rubber
Buckle type: Pin buckle
Buckle material: Stainless steel

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.

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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.

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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.

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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.

Key materials

O-megasteel
Sapphire Crystal

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O-megasteel

O-MEGASTEEL is a new high-performance stainless steel alloy. Through an ingenious Pressure Electro Slag Remelting process, the material obtains a high purity, allowing for a greater polish and incomparable shine. Stripped of its nickel, and boosted with nitrogen and manganese, O-MEGASTEEL also offers a brighter white colour, as well as superior strength and a hardness that is 40% to 50 % higher than conventional steel. As well as being non-ferromagnetic, the unique composition also delivers exceptional resistance to corrosion for a longer-lasting appearance.
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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.

O-megasteel

O-MEGASTEEL is a new high-performance stainless steel alloy. Through an ingenious Pressure Electro Slag Remelting process, the material obtains a high purity, allowing for a greater polish and incomparable shine. Stripped of its nickel, and boosted with nitrogen and manganese, O-MEGASTEEL also offers a brighter white colour, as well as superior strength and a hardness that is 40% to 50 % higher than conventional steel. As well as being non-ferromagnetic, the unique composition also delivers exceptional resistance to corrosion for a longer-lasting appearance.

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.

PRECISION AT EVERY LEVEL

Seamaster Ploprof - O-megasteel on rubber - blue dial

Movement CALIBRE OMEGA 8912

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 Geneva waves in arabesque.