Zenith Chronomaster El Primero 'Shadow' Revival 97.T384.4061/21.C822 collection_seamaster meeting ISO standards for scuba

meeting ISO standards for scuba diving to depths of up to 300 meters

Crystal: Dual-curved sapphire with inner anti-reflective coating

Water Resistance: 3bar

rhodium coloured applied indexes with natural coloured Super-LumiNova®

Zenith Chronomaster El Primero 'Shadow' Revival 97.T384.4061/21.C822 collection_seamaster meeting ISO standards for scubaA timepiece shrouded in mystery. Its existence has eluded collectors and Zenith collaborators alike for decades. As the legend goes, in 1970, not long after Zenith debuted the groundbreaking El Primero calibre, the manufacture had produced a prototype of a manual winding chronograph, housed in a blackened steel case a rarity for the time. Only a handful of this spectral prototype was made, but the model was never officially produced or commercialized.