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Plus, the 60-hour power reserve is great. A 1/10th of a second chronograph function with a central chronograph hand, small seconds, a 60-minute counter and a 60-second counter. So, technically it’s called the El Primero 3604 but in terms of specs there’s no difference. It now houses the calibre El Primero 3600, although it has been adjusted specifically for the open worked aspect of the design. In addition to these changes, the window no longer has a metallic border, giving it better integration into the overall display. Meaning that you can see the star-shaped escape wheel through it without compromising on the chronograph’s base functionality. In order to facilitate this, the open heart aperture is covered with a hesalite crystal that forms the base of the small seconds. On steel the main dial can be black or white but in rose gold it’s only available in white.Īdditionally, it’s worth noting that the small seconds subdial is still present on the new watch as it was simply removed on the previous Open version. It’s cool that the tone of the steel visible through the open heart aperture at 3 o’clock matches the typical light grey of the small seconds subdial. Unlike the previous open model it now features the signature tri-colour subdials that are a reference to the original A386. However, it’s the dial which is the focal point of the revamped Chronomaster Open collection.
#ZENITH CHRONOMASTER OPEN SERIES#
The case is available in stainless steel or rose gold and if precious metal is your preferred material, you’re in luck because Zenith have also announced a series of Chronomaster Sports in gold as well. As part of the downsize, the edge has a more pronounced bevel, giving the piece a more angular appeal. It reflects the recent upswing in the popularity among collectors for retro styles, which tend to favour smaller sizes. Now it’s the turn of the open heart model known imaginatively as the Zenith Chronomaster Open.Ĭompared with the pre-existing Open edition, the case of the new watch has been reduced in size down to 40mm as opposed to 42mm. Since the El Primero Calibre 3600 became a staple of Zenith’s Chronomaster collection last year they’ve slowly been updating and revamping various versions of the timepiece to include the modern movement.
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