Rolex has launched the long awaited updated Submariner for 2020. The case size moves up slightly to 41mm, there’s a ceramic bezel insert and the bracelet also gets an upgrade. You can’t blame Rolex for not wanting to upset its loyal investors by changing a winning formula, so the look of the watch – date window, or no window – pretty much remains the same.

The big news is that the movement has been upgraded, so you now get a 70 hour power reserve, which is very useful. The bracelet gets the GlideLock system, so you have about 20mm of play that you as an owner can adjust, rather than take it to the dealership where you will be relieved of perhaps £65 for having a link removed.

There’s a new light blue, or teal coloured superlume on the markers too, which we think looks the business.

Prices start at just over £7600, but with extremely long waiting lists being fairly common at UK authorised dealers, the RRP is largely a minor detail when it comes to Submariners, especially green ones. Demand will exceed supply so expect to pay about nine or ten grand on the `flipper’ market – if you can find one.

Here’s some spec info from Rolex;

The Submariner’s rotatable bezel is a key functionality of the watch. Its engraved 60-minute graduations allow a diver to accurately and safely monitor diving time and decompression stops. Manufactured by Rolex from a hard, corrosion-resistant ceramic, the Cerachrom bezel insert is virtually scratchproof. A luminescent capsule on the zero marker ensures legibility, no matter how dark the environment. The bezel’s knurled edge is carefully designed to offer excellent grip under water, even with gloves.

A yellow Rolesor version (combining Oystersteel and 18 ct yellow gold) of the Submariner Date presents a royal blue dial with a rotatable bezel and a blue Cerachrom insert.

Two versions of the Submariner Date, one in Oystersteel and the other in 18ct white gold, bring original colour combinations, with the dial and Cerachrom insert in different hues. The first watch blends a black dial with a green bezel, while the second proposes a black dial and a blue bezel.