Zenith 10.9000.9004/96.R921

Unused, Zenith DEFY Peak Series, one-hundredth of a second chronograph, model: 10.9000.9004/96.R921, 44mm diameter, carbon fiber case, fully skeletonized dial, one front and one back dual escapement system, one for timekeeping and the other for chronograph, with power display. Paired with the self-produced 9004 high-frequency movement, this movement has a frequency of 360,000 vibrations per hour (50 Hertz), which is ten times that of its predecessor, the El Primero. Therefore, it enables the timing accuracy to reach 1/100 second, with high-precision timing and the chronograph second hand making one full rotation per second, which is truly a wonder.