Rolex Deepsea Reference 116660 (photo: Rolex)

The Deepsea owes its depth rating to the Ringlock system architecture used to waterproof the Oyster case. A Helium Escape Valve was also developed to control the release of helium that enters the watch case during the descent, ensuring that the case does not crack under the pressure. A Triplock winding crown completes the seal with triple protection from water entering the case through the crown.

The Deepsea is equipped with a 3135 movement, a Rolex-certified superlative chronometer with a power reserve of about 48 hours. The bezel features a 60 minute graduated black Cerachrom insert that is highly resistant to scratching and fading. The 904L stainless steel Oyster bracelet comes with an Oysterlock clasp, Fliplock extension link and Glidelock extension system, allowing a diver to extend the bracelet to fit over a wetsuit.

The suggested retail price for the Rolex Deepsea is 11,500 Swiss francs, or $11,831 US. This model is also available with a D-Blue gradient dial to commemorate the 2012 Deepsea Challenge.

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