Zenith ChronoMaster Open watch

The Zenith ChronoMaster Open El Primero watch is a classic high luxury watch which offers elegant styling, mechanical sophistication, and technical fascination, thanks to its striking openly crafted dial that permits a generous glimpse into the intricate self-winding chronograph mechanism. Beautiful, technically distinguished, yet visually surprising, this model summarizes the allure of all Zenith watches.

Each ChronoMaster Open watch has an exclusive horological pedigree. Ticking inside the stainless steel or 18K gold of this watch is a fine automatic-winding chronograph movement--the El Primero 4021 caliber--which has been conceived and manufactured exclusively by Zenith. Based upon the famous, original El Primero caliber which set new standards for chronograph performance when it was first introduced, the Zenith 4021 caliber offers a chronograph function complete with central chronograph seconds and a 30-minute totalizer. Horizontally-coupled and controlled by a column wheel, the chronograph mechanism meets traditional standards associated with the highest quality chronographs. Of course, like all Zenith El Primero chronograph watches, the ChronoMaster Open is characterized by its unique high-beat movement, whose balance wheel pulsates at a frequency of 36,000 alternations per hour.

Thanks to this rapid balance wheel frequency, this watch offers precision to within 1/10 of a second, and remains an industry performance benchmark. Another sought after complication possessed by the ChronoMaster Open watch is a power-reserve indicator, whose appealing display gives a unique aura to the lower half of this watch's captivating dial. The Zenith ChronoMaster Open watch is presented in two sizes--the T and XXT versions, which measure 40 and 45 millimeters, respectively. Produced in stainless steel or 18K rose gold, the ChronoMaster Open watch range offers customers a diverse selection of beautiful dials in a variety of attractive shades and finishes, including many with sublime, intricate guilloche decoration--all with the unique dial cutout which displays the rapidly pulsing balance wheel. Each of these Zenith watches are equipped with a sapphire crystal caseback, permitting a full view of the complex movement, with its fine decorative detail and solid gold central winding rotor. Fine, hand-sewn alligator straps and a signed triple folding clasp complete each of these prestigious timepieces.