Very robust, very functional, very technical, very sporty. The case of each Ulysse Nardin timepiece is individually numbered on the side. Diver Deep Dive is water resistance to 1,000 metres. It includes a removable titanium guard on the crown at 2 o’clock and a helium release valve at 9 o’clock, for deep dives of prolonged periods of time or undersaturation. Diver Deep Dive is presented on a rubber strap with titanium expandable elements and a titanium folding buckle.