OMEGA Seamaster Diver 300m Co-Axial Master Chronometer 43.5mm O21092442001002

Since 1993, the Seamaster Professional Diver 300M has enjoyed a legendary following. Today’s modern collection has embraced that famous ocean heritage and updated it with OMEGA’s best innovation and design. This 43.5mm model is crafted from stainless steel and titanium and includes a black ceramic bezel with a white enamel diving scale.

The dial is also polished black ceramic and features laser-engraved waves. The skeleton hands and raised indexes are titanium-plated and are filled with white Super-LumiNova, while the helium escape valve has been given a conical design. The watch is presented on a 5-stripe black and grey nato strap and is driven by the OMEGA Master Chronometer Calibre 8806, which can be seen through the sapphire-crystal on the wave-edged caseback.

GRADE 2 TITANIUM

Titanium alloys are light, corrosion-resistant, biochemically inert and able to withstand extreme temperatures. These properties make them particularly appropriate for products in the aircraft, spacecraft and medical sectors. They achieve the perfect balance between solidity, corrosion-resistance and workability. Grade 2 titanium offers a dim grey colour and suits mostly "brushed" finished pieces. It has featured in a number of OMEGA timepieces used for sport and space exploration, where light reflections should be avoided.

CERAMIC

OMEGA has unrivalled expertise in the use of ceramics, dating back more than 10 years. Taking its origin from the Greek word "keramos", ceramic is an inorganic, non-metallic substance obtained by firing at high temperatures. It allows the creation of completely dense watch parts with exceptional mechanical properties. Ceramic is one of the most popular choices for customers when selecting their timepiece, thanks to its appealing colour range and specific properties, such as it being two times lighter than stainless steel, hardwearing, highly scratch-resistant, chemically inert, hypoallergenic, environmentally friendly and non-magnetic.

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 SEAMASTER DIVER 300M COLLECTION

Since 1993, the Seamaster Diver 300M has enjoyed a legendary following. To celebrate the 25th anniversary of its release, OMEGA gave the collection a complete makeover, updating the materials and technology while retaining the original design and ocean spirit.

WATCH SIZING: 
If you know your wrist size and would like your new watch to be adjusted to fit prior to delivery, please contact our friendly Customer Service team who will be happy to arrange this for you.
If you receive your watch and it requires adjustment, simply pop into any of our showrooms with your watch along with proof of purchase and one of our sales associates will be able to do this free of charge for you while you wait.

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OMEGA: Master Chronometer

Bringing together luxurious design and ground-breaking functionality, OMEGA have earned a reputation for producing world class timepieces that never fail to make a lasting impression.

In 1848, when Louis Brandt sat down to create the company’s very first watches, his ambition was to produce the most accurate movements possible. For OMEGA, precision is still the truest mark of mechanical watchmaking quality. For someone investing in a watch, those few extra seconds are a testament to superior craftsmanship, a determination for perfection, more technical investment, more research, more development and an infinite passion for achieving better innovation.

Since 2015, OMEGA’s Master Chronometer testing for each individual timepiece has provided customers with total transparency and a proven precision and performance they can trust.

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We’re sure that you’ll love your new item, but on the rare occasion that it isn’t 100% right just send it back within 30days* and we’ll be more than happy to give you a full refund or an exchange.

*to allow for Christmas gifting, we have extended the returns window to the 31st January for items purchased between 1st November and 24th December.

For Pre-Owned watches and items purchased under a credit agreement, we will be happy to refund or exchange your item providing it is returned to us within 14 days of purchase. View Returns Information