Zenith was started in 1865 by Georges Favre-Jacot inLe Locle in the canton of Neuchâtel. Zenith is one of the Swiss watch manufacturers that still produce their own movements in-house. The El Primero calibre, which was first released in 1969, was one of the first automatic chronograph movements and has a frequency of 36,000 alternations per hour. This high rate allows a resolution of 1⁄10 of a second and a potential for greater positional accuracy over the more common standard frequency of 28,800 alternations per hour.The El Primero was honoured with a 2012 release of the El Primero Stratos Flyback Striking 10th, limited to 1,969 pieces, that housed the same 36,000 vph movement and a sub-dial measuring in tenths of a second to make a complete rotation every ten seconds.
New 36-MM case dedicated for Women Gradient dial with starry sky pattern New Interchangeable strap system Strap box included : 3 different colors straps + a folding buckle Ref 16.9200.670/01.MI001
DEFY EL PRIMERO 21
1/100th of a second Chronograph movement Exclusive dynamic signature of one rotation per second for the Chrono hand 1 escapement for the Watch (36,000 VpH - 5 Hz) ; 1 escapement for the Chronograph (360,000 VpH - 50Hz) Certified Chronometer Ref 95.9002.9004/78.M9000
PILOT TYPE 20 CHRONOGRAPH ADVENTURE
Bronze Case that will develop his own patina Automatic El Primero column-wheel chronograph movement Arabic numerals entirely made of SuperLuminova Case-back engraved with Zenith flying instruments logo Ref 29.2430.4069/63.I001
CHRONOMASTER REVIVAL SHADOW
Microblasted titanium case Original 1969 case with 37 mm diameter Automatic El Primero column-wheel chronograph movement Ref 97.T384.4061/21.C822