Locked into a 45 mm case, the skeleton-worked mechanism of the Chronomaster El Primero Grande Date Full Open displays its column wheel and silicon escapement under a dial carved in sapphire. This latter features two transparent blue- and grey-tinted counters – the aesthetic signature of the original 1969 model. A silver-toned inner bezel ring surrounded by a blue ring, a black and white minute scale, along with luminescent facetted hands and hour-markers, all contribute to ensuring optimal legibility, yet without obscuring the view of the fascinating inner workings. The large date at 2 o’clock – shown by two concentric discs with cut-out numerals – is read off against a bright red background in an engraved aperture, while the slim red-tipped central sweep-seconds hand adorned with the emblematic Zenith watches tokyo Replica star sweeps over this perfectly clear display.
How will other watch makers respond? Will it become expected for watch makers to make claims about the accuracy of their watches? I am not sure that there will be an industry-wide move to mention actual numbers, but if there is a watch that comes out with a story about accuracy and some special technical elements, you can be damn sure we will point out if they omit actual performance numbers. I think what is more important is that a watch like this, with such a big emphasis on silicon, that isn’t stupid high in price, will force the industry to adopt next-generation watch movements with haste.Only a few companies in Switzerland are able to produce silicon parts. The tools needed for this task are very expensive, which includes the labor needed to operate and program them. Most watch brands that use silicon parts don’t make the components themselves. Is now a time to start given clear levels of increased need? Note again that investments by watch makers into silicon technology in traditional watchmaking has been going on for well over a decade. Though, little of this technology has trickled down into what we might call “affordable” timepieces. Jean-Claude Biver said watch makers will not produce their own silicon parts until they can also make parts for other companies in different industries.
Equipped with a silicon lever and escape-wheel, this 332-part movement drives central hours and minutes hands, along with small seconds, chronograph, large date, moon & sunphase functions, while maintaining an over 50-hour power reserve. The celestial kinetic ballet is shown on two superimposed discs, with the moon disc rotating every 59 days (two lunar cycles) and the day/night disc making one full turn in 24 hours.
The impressive stature of the Chronomaster El Primero Grande Date Full Open, complete with its fluted crown and double round pushers, is further enhanced by a steel bracelet or a black leather rubber-lined strap. Another version is available with a two-tone exterior (stainless steel case with a pink gold bezel), teamed with a chestnut leather strap.