Zenith Defy 21 on Black Ceramic Bracelet – 49.9000.9004/78.M9000

The high-frequency El Primero 21 1/100th chronograph in a 44mm black ceramic DEFY case, paired with a black ceramic bracelet. Its automatic movement features two independent high-frequency escapements beating at 50Hz for the chronograph function and 5Hz for timekeeping.