Ball watches keep on coming up with little tweaks and details that keep their Engineer model attractive to collectors – and divers.

If you are serious about underwater adventure, then you want a watch with a helium valve and normally, this can be found countersunk into the case, or mounted around the 10 o’clock position.

But on this one, Ball has put the valve next to the winding crown. Clever stuff. Here’s the word;

The Engineer Hydrocarbon NEDU represents major technological innovation in the design of diving watches. Dedicated to the Navy Experimental Diving Unit (NEDU) – a United States Navy unit responsible for rolling out operational diving and decompression rules for the US Armed Forces – the NEDU timepiece is a tool watch of the highest order, featuring extraordinary water resistance and technology strong enough for military missions.

Built from chromed pure black ceramic, the uni-directional rotating bezel is exceptionally resistant to corrosion, scratches and ultraviolet rays. Its ergonomic contours ensure precise handling even when wearing diving gloves, while the oversized numerals and graduation enable immediate legibility. Supporting the bezel are two chamfers cut into the case flange, acting like drains to expel any trapped water.

Along with 600 meter water resistance, the NEDU features a world first in watchmaking: the automatic helium release valve is directly incorporated into the crown. This patented BALL innovation allows helium, hydrogen and other gases to safely escape during decompression – eliminating damage. The chronograph functions are also fully operational under water thanks to the design of the pushers.

You also get the amazing Ball gas tube lume of course.

Dial options include black, blue, or a graduated blue and you can have a silicon strap or steel bracelet. £3491 for the rubber strap and £3582 for the steel bracelet.

More here.