Zenith Defy 21 on Grey Strap – 10.9000.9004/96.R921

The high-frequency El Primero 21 1/100th chronograph crafted in a light yet rugged 44mm carbon fiber DEFY case with a black rubber strap. Its automatic movement features two independent high-frequency escapements beating at 50Hz for the chronograph function and 5Hz for timekeeping.