It has a 46-millimetre steel case covered in vulcanised black rubber the latest addition to Ulysse Nardin's Black Sea family. The bezel is unidirectionally rotating, while the crown and back are screwed down, contributing to the achievement of the good water-resistance rating of 20 atmospheres. On the dial, which is guilloché engraved with a wave motif, the hands and indexes are treated with a blue luminescent substance, while at 12 o'clock there is an indication of the remaining power of the movement. The latter is mechanical with automatic winding, calibre UN-26 (28 jewels, 28,800 vibrations per hour, 42-hour power reserve). The crystal protecting the dial is sapphire, with anti-reflective treatment, as is the porthole that opens on the back and allows the movement's gears to be observed. The strap is made of rubber, with two ceramic elements personalised with the engraving of the Maison's name and logo.
