Description
The Omega Seamaster Ploprof 1200M Ref. 227.90.55.21.04.001 is one of the most extraordinary professional diving watches ever developed by Omega. Inspired by the legendary Seamaster Ploprof of the 1970s, originally engineered for professional saturation divers, this modern generation combines the unmistakable architecture of the original with advanced titanium construction and Omega’s sophisticated Master Chronometer movement technology.
Presented in an imposing asymmetrical case measuring approximately 55mm by 48mm, the watch is manufactured from lightweight Grade 5 titanium. This advanced material offers exceptional strength, corrosion resistance and significantly reduced weight compared with stainless steel. Despite its substantial dimensions, the titanium construction provides surprising comfort while retaining the unmistakable presence of the legendary Ploprof.
The striking white dial creates a beautiful contrast against the blue ceramic bezel and titanium case. Large luminous hour markers and broad hands ensure exceptional underwater legibility, while the distinctive orange minute hand provides an additional visual reference for precise time reading. A date aperture at approximately 4:30 adds everyday functionality without compromising the highly legible professional diving layout.
Surrounding the dial is a substantial blue ceramic unidirectional rotating diving bezel incorporating a clearly defined 60-minute scale. The bezel operates through the Ploprof’s distinctive security mechanism, which requires the release button positioned at approximately 2 o’clock to be depressed before adjustment. This innovative system helps prevent accidental movement of the diving scale during underwater operations.
Powering the watch is the Omega Co-Axial Master Chronometer Calibre 8912, a sophisticated self-winding mechanical movement operating at 25,200 vibrations per hour. Featuring Omega’s Co-Axial escapement, silicon balance spring and twin mainspring barrels, the movement delivers approximately 60 hours of power reserve. Its Master Chronometer certification confirms exceptional precision, performance and resistance to magnetic fields of up to 15,000 gauss.
The Ploprof offers an extraordinary 1,200 metres of water resistance, reinforcing its credentials as a genuine professional saturation-diving instrument. Its robust case architecture, protected winding crown and automatic helium escape valve are specifically engineered to withstand the extreme pressures encountered during deep-sea diving operations.
One of the defining features of this reference is its distinctive Grade 2 titanium Sharkproof mesh bracelet. Inspired by Omega’s historic professional diving bracelets, the finely woven titanium construction provides exceptional strength, flexibility and corrosion resistance while complementing the substantial titanium case. The bracelet is secured by a robust folding clasp with an adjustable extension system, allowing comfortable wear over a diving suit.
The watch is protected by a scratch-resistant sapphire crystal with anti-reflective treatment, while the exhibition caseback reveals the beautifully finished Master Chronometer movement. This combination of advanced materials and exceptional mechanical engineering represents a significant evolution from the original stainless-steel Ploprof models.
Now discontinued, the Omega Seamaster Ploprof 1200M Ref. 227.90.55.21.04.001 occupies a particularly distinctive position within the modern Seamaster collection. Its Grade 5 titanium case, striking white dial, blue ceramic diving bezel, sophisticated Calibre 8912 movement and iconic Grade 2 titanium Sharkproof mesh bracelet make it an exceptional collector’s piece.
Combining genuine professional diving heritage with contemporary Omega engineering, this remarkable Ploprof represents one of the most technically accomplished and visually recognisable diving watches produced by the brand.
Functions: Hours, Minutes, Seconds, Helium Escape. This pre-owned Omega Seamaster Ploprof 1200m has been referenced against all technical documents and manufacturer records were available to ensure authenticity and a clean history. Pre-owned timepiece. Mint Condition. Includes original Omega box and papers. Backed by a 12 month Grand Timepiece warranty. Style: Tool. Model: 227.90.55.21.04.001 Photos of the actual watch!
Accompanying your purchase is a tax invoice and a valuation certificate for Insurance purposes. All our products have full provenance and will be accompanied by their original box and papers where possible or service papers by the Brand itself. Our watches are sold with a 12 Months Warranty or alternatively the balance of manufacturer’s warranty where applicable. We have been selling pre-owned luxury timepieces since 2015 and do all our due diligence to ensure the timepieces are authentic and have a clean history.
