Omega has unveiled a limited edition Seamaster Professional Diver 300 M to mark the 25th anniversary of its iconic diver’s watch. This new watch pays homage to a limited edition it introduced in 1993 with a tantalum case.

The watch comes with a 9-link two tone bracelet

The Seamaster Professional Diver 300M signaled Omega’s return to the world of diving watches according and was the watch that sparked its ongoing partnership with cinematic superspy James Bond. That first Seamaster Diver 300M introduced a robust, blue-gray, corrosion-resistant metal called tantalum to the world of watches — interestingly, a material still used only sparingly throughout the horological world by a relative handful of brands due to its density and high melting point.

This new limited-edition blends tantalum with both titanium and Omega’s proprietary Sedna gold. The watch bears all the hallmarks of the Seamaster Diver’s 25th-anniversary “facelift” that debuted at Baselworld this week: a larger case size of 42 mm; polished ceramic dial with a new laser-engraved execution of the wave motif that debuted on the original model; the same wave motif on the edge of the caseback and sapphire crystal of the exhibition caseback; a new, patented conical helium-release valve; and an integrated bracelet.

The rotating divers scale is a tantalum base holding a Sedna gold bezel ring

But whereas the models in the main collection use ceramics for their rotating divers’s-scale bezels, the Seamaster Diver 300M Titanium Tantalum Limited Edition uses a tantalum base holding a Sedna gold bezel ring. Grade 2 titanium serves as the metal for the main case and bracelet, with tantalum, its unique blue-gray tones providing a subtle contrast, making another appearance as the bracelet’s middle links.

Other touches of Sedna gold round out the picture, drawing pleasant attention to the crown, helium release valve, and borders of the middle bracelet links, as well as the framework of the luminescent-coated hour and minute hands and hour indices.

The limited edition number is seen on the casebandOn the reverse side of the 300-meter water-resistant case you’ll find another sapphire caseback, with another special image, namely the iconic Seahorse medallion that has long been a symbol of Seamaster watches.

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The watch is powered by Caliber 8806 Master Chronometer movement, the same one used in the 1948 Central Seconds model. The rest of the models in the newly released, revamped Seamaster Diver series, which are in either all-steel or two-tone steel-and-gold cases, use the base Caliber 8800, which includes a date window at 6 o’clock. The Omega Seamaster Professional Diver 300M is limited to 2,500 pieces and is priced at CHF12,000 ($12,646)