45.5 mm, titanium on NATO strap

As part of the Five Deeps Expedition in 2019, the Ultra Deep made history when it reached the deepest place on Earth. Following that World Record dive, the game-changing watch has now been adapted for a unique collection available to the public. Tested in real ocean conditions during its development, the design is water-resistant to 6,000 metres (20,000 ft.) and meets the ISO 6425:2018 standard for saturation divers’ watches.

This 45.5 mm model in sand-blasted Grade 5 Titanium features a brushed black ceramic bezel ring with its diving scale in Liquidmetal™. Through the protuberant and domed sapphire crystal, there is a black ceramised Grade 5 titanium dial with a gradient white-to-cyan central seconds hand, cyan Arabic numerals, as well as 18K white gold hour/minute hands and hour markers, which are all coated with white Super-LumiNova.

The watch includes distinctive “Manta Lugs” at each end of the case, which hold on to a striped black and cyan polyamide NATO strap with a loop and buckle in Grade 5 Titanium. On the caseback, there is a Grade 5 titanium medallion, laser-engraved with a Sonar emblem featuring the iconic Seahorse at its centre. Inside, the watch is driven by the Co-Axial Master Chronometer Calibre 8912.