The movement is the same Cal. 3135 as the previous model, but it uses the blue Parachrom balance spring, which was developed exclusively by Rolex and has excellent magnetic and shock resistance, further improving precision and reliability.

The fourth-generation Sea-Dweller, Ref. 116600, was released in 2014.
The basic design remains the same, but by incorporating the latest technology, it has evolved even further.

The bezel is made of ceramic and, like the Deepsea, has 1-minute markings up to 60 minutes.
The indexes and hands are larger, and Chromalight luminous paint is used, improving visibility in dark places.
The bracelet features two size adjustment mechanisms, the Glide Lock extension system (which allows adjustment up to 20 mm) and the Flip Lock extension link (which can be extended up to approximately 26 mm), ensuring comfortable wearability and ease of use.