The is also equipped with a unique bracelet, featuring a double extension system for a perfect fit over any diving suit. If that wasn’t enough to wet your tastes buds this watch is also equipped with a Helium Valve. If the outside of the watch reaches 3 to 5 bars the valve opens to release helium stored in the watch. This pressure system keeps the watch safe from decompression damage.
This is an important point because many brands who make a watch for a special event or occasion do not consider that people 50 years from now might have no idea what a product is all about unless it says so on the product itself.
The Rolex Deepsea Sea-Dweller D-Blue is currently the most high-performance dive watch that Rolex makes, as well as the largest in a thick (17.7mm) and broad (44mm wide) case. It comes on an Oyster-style bracelet and is made from 904L steel. The caseback of the watch is in titanium and it has a range of features that help offer the massive water resistance such as the Ring Lock System and the massive, 5 millimeter thick sapphire crystal over the dial.