Datejust 150310 replica

The Ringlock system consists of three parts: a domed 5.5 mm thick sapphire crystal, a high-performance stainless steel ring in the middle case, and a case back made of Oystersteel and grade 5 titanium. The triple-lock winding crown has three waterproof rings that screw down the case like a submarine hatch, ensuring perfect waterproofness.

The Ringlock system, with its 5.5 mm domed sapphire crystal, a high-performance stainless steel ring in the middle case, and a case back made of Oystersteel and grade 5 titanium, ensures that the case is perfectly waterproof and can handle the pressure of 3,900 meters (12,800 feet).

The case of the Rolex Deepsea comes with a helium escape valve that protects the diver’s watch from damage during deep diving. Rolex patented this helium escape valve in 1967. When the diver is decompressed in a hyperbaric chamber, the helium escape valve releases the extra pressure that has built up inside the case. When it comes to deep diving, the reliability and safety of your watch are top priorities. That’s why every Rolex Deepsea goes through Rolex‘s thorough waterproofing tests. For this reason, Rolex has teamed up with Comex, the well-known French company that specializes in underwater engineering and high-pressure technology, to develop a high-pressure testing chamber. Each Rolex Deepsea is water-resistant to a depth of 3,900 meters. An additional 25% safety margin is included.