The Hourstriker Phantom by Ulysse Nardin is the result of an unexpected collaboration between the legendary watchmaker and high-end French audio specialist, Devialet.
The sleek hour striker can be set to chime on the hour and half-hour, and its speaker-inspired system of sound transmission was where Devialet’s expertise came in. A sound boost was achieved in two ways: Gongs secured by “torsion arms” transmit sound to the outside of the watch and a thin metal membrane with eight holes fixed to the back of the Ulysse Nardin watch also acts as a soundboard. The polished 43mm titanium case amplifies the sound and extends its resonance to 85 decibels, a level said to be unrivalled in the watchmaking world. The openworked satin-brushed anthracite dial is inspired by soundwave patterns, a discovery of German scientist and pioneer in experimental acoustics, Ernst Chladni. The tinted glass under the filigree work obscures the watch’s UN-610 automatic manufacture movement for a contemporary look.