Zenith DEFY 21 44 mm Black Dial Black Carbon Rubber Strap 10.9000.9004/96.R921

The high-frequency El Primero 21 1/100th chronograph crafted in a light yet rugged 44mm carbon fibre 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.