For the Rolex Deepsea Watch, RINGLOCK system patent three-type case design is complicated and elaborate, and the brand new Rolex Deepsea uses the RINGLOCK system. Inside the watch case there has the extremely strong nitrogen-alloy stainless steel ring, as a wrist watch support, it can withstand the immense pressure that can make the submarine be smashed up. To resist outside the heavy pressure out of the watch case, the watch surface is equipped with the 5 mm thick Arched blue crystal glass which has been treated by high purity aluminum oxide, and is able to withstand the pressure in the depth of 3900 meters (12800 feet) and up to 3 tons. In addition, the watch case Cover is made with grade 5 titanium alloy, which has very high patience that external things never penetrate.

High voltage test cases in order to ensure the waterproof depth of Rolex Deepsea can reach to 3900 meters (12800 feet), Rolex specifically installed a special device for testing purposes ─high-voltage compartment. This high-performance piece type stainless steel submersible box, weighing 1.3 tons, is used to simulate the water pressure below the sea level of 4875 meters (16000 feet). However, the depth that it made is about 25% more than what has shown on the surface. Consequently, the pressure produced in the depth, is the equivalent of applying 4.5 tons of gravity on the watch glass mirrors and rear case. The high-tech device is researched and made by international famous French diving company COMEX (Compagnie Maritime d 'Expertise) and they specialize in underwater engineering and high-pressure technology, and has for decades been cooperating with best rolex replica.

Rolex Deepsea being the special diving watches, has caught great attention from the watches fans and more and more watches fans are favorable for the replica watches especially the Rolex diving watches because of the high quality and excellent waterproof performance.