Ball's Engineer Master II Diver watches are dedicated to the accomplishments and nature preservation efforts of free-diver Guillaume Nery. This timepiece is equipped with Swiss-made ETA 2893-2 automatic calibre. It is protected from shock, magnetic influences and water penetration. Hands, markers and numerals are illuminated through the usage of 53 micro gas tubes that glow 100 times brighter than luminous paint. Silver-coloured dial elements are used to indicate the GMT display. A date window is positioned between 4 and 5 o'clock. Additional functionalities include a second time zone hand, illuminated rotating inner bezel, diamond-like carbon (DLC) stainless steel case, crowns that operate underwater and scratch-resistant sapphire crystal glass with anti-reflective coating.