Rolex Sea-Dweller DEEPSEA

Rolex Oyster Perpetual Date Sea-Dweller DEEPSEA. Its reference number is 116660. With an official depth rating of 3,900 metres (12,800 ft), the Sea-Dweller DEEPSEA represented in its launch year the most water resistant mechanical watch in serial production. For obtaining this official depth rating the Sea-Dweller DEEPSEA water resistance is... Read More

Rolex Oyster Perpetual Date Sea-Dweller DEEPSEA. Its reference number is 116660. With an official depth rating of 3,900 metres (12,800 ft), the Sea-Dweller DEEPSEA represented in its launch year the most water resistant mechanical watch in serial production. For obtaining this official depth rating the Sea-Dweller DEEPSEA water resistance is tested to a depth of 4,875 m (16,000 ft) to offer the 25% safety reserve required by the ISO 6425 divers' watches standard.[4] To test the water resistance of the Sea-Dweller DEEPSEA, Rolex uses testing equipment developed for them by Comex.[5]

Normal surface air filled watch cases and crystals designed for extreme depths must be dimensionally large to cope with the encountered water pressure. To obtain its water resistance the Rolex Sea-Dweller DEEPSEA watch case has a diameter of 43.0 mm, thickness of 17.7 mm (domed crystal thickness 5.5 mm) and the case and bracelet weigh 220 g. See Less