Zannetti Piranha Black Skeleton An important, aggressive, professional watch, and an original one like no other. The Piranha wraps around the wrist and transforms itself into a perfect companion during dives down to considerable depths; specialists will no doubt appreciate the automatic helium valve, a distinguishing mark common to all the top diving watches. But it is with the dial that the Piranha shows off its most exciting features. Zannetti has transformed a drawing he has produced into a precious polychrome champleve decoration based on various marine shades of blue. The result is an exciting watch to be enjoyed daily and shown off with pride.