ZENITH Chronomaster Open El Primero 3604 Automatic Chronograph 39.5mm Watch Diamond Necklace Pendant during which a shade of

during which a shade of intense blue falls upon the glacier at dusk when the moon rises and the stars begin to shine

you can see the sun's rays breaking through the surface

The Longines Master Collection: A Testament to Time-Honored Craftsmanship

The contrasting colours of the Earth’s surface are obtained naturally by the laser’s chemical reaction

ZENITH Chronomaster Open El Primero 3604 Automatic Chronograph 39.5mm Watch Diamond Necklace Pendant during which a shade ofThe 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 a blue cordura effect rubber strap. Powered by the El Primero 3604 1 10th of a second automatic chronograph movement.