ZENITH Chronomaster Open El Primero 3604 Automatic Chronograph 39.5mm Watch Screw-in Crown ensuring precision and reliability even

ensuring precision and reliability even during extended dives or adventures

star and Interlocking G motifs

oscillating weight

and two world time alarms

54TWT of round diamonds

ZENITH Chronomaster Open El Primero 3604 Automatic Chronograph 39.5mm Watch Screw-in Crown ensuring precision and reliability evenThe CHRONOMASTER Open offers a view of the beating heart of the El Primero movement from the dial. Crafted in a sleek 39. 5mm steel case, this version features a matte silver dial with tricolour counters and a transparent counter for the running seconds, paired with an integrated steel bracelet. Powered by the El Primero 3604 1 10th of a second automatic chronograph movement. Pioneering movements deserve to stand out in inspired and unprecedented