ZENITH Chronomaster Open El Primero 3604 Automatic Chronograph 39.5mm Watch sapphire The two engraved emblems feature

The two engraved emblems feature as the defining design detail of this sterling silver ring

and a dotted minute track on the outer zone

The date window at 6 o'clock

blending luxury with the everyday need for expression

ZENITH Chronomaster Open El Primero 3604 Automatic Chronograph 39.5mm Watch sapphire The two engraved emblems featureThe 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 black 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.