Ulysse Nardin’s links to the sea run deep. A recognized pioneer of watchmaking innovation since 1846, the Manufacture’s early renown was built on the peerless precision and reliability of its marine chronometers – essential navigational instruments that helped seafarers determine longitude by means of celestial navigation. The Manufacture is equally renowned for what it has achieved underwater, with its solidly built and unabashedly masculine Diver collection.

Like its immediate predecessor, the Diver Deep Dive is powered by the in-house caliber UN-320, which has a patented silicium lever and escape wheel configuration. The balance spring is also in silicium, a material Ulysse Nardin first introduced to Haute Horlogerie.

Along with 1 km water resistance — the world record diving depth is 701 meters — new technical standouts on this limited edition (300 pieces) masterwork include 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 under saturation. The rubber strap is a first: it has an expandable element that adjusts to changes in wrist size during dives, caused by the compression of your neoprene diving suit. The robust, angular-shaped case is in titanium, with cut-edged horns. The large bezel has 12-notched teeth for easy manipulation, even with diving gloves.

The look is stark yet shark: 15 hammerhead sharks adorn the dial; another is stamped on the caseback; a bright red one swims on the side of the crown guard; and another decorates the dial counter. Destined for fans of active leisure and all water sports, the Diver Deep Dive will especially appeal to men looking for a timepiece that is striking looking but not fragile, that they can wear even when things get very intense.