This elegantly sophisticated model is fitted with a rubber-lined black alligator leather strap, secured to the wrist by a pin buckle in stainless steel or 18-carat rose gold, or by a stainless steel bracelet with triple folding clasp. The distinctive 1/10 th of a second indication is clearly marked off by the dedicated chronograph hand. The faceted hands and hour-markers coated with Superluminova are rhodium-plated, or gold-plated on the rose gold models. On the stainless steel version, these come in subtle shades of blue and grey, while the rose gold version features three anthracite counters. Both the stainless steel model and the gold model feature three counters. The silver sunray-brushed dial features circular satin-brushed zones for the rose gold version. Seeking to reduce the energy required naturally entailed making the movement wheels as light as possible, which is why some of them are in silicon – a material three and a half times lighter than its traditional counterparts.ĭriven by the El Primero 4052 B automatic calibre, the new El Primero Striking 10 th chronograph comes in a choice of 18-carat rose gold or stainless steel for its 42 mm case that is water-resistant to 10 ATM (100 metres) and fitted with a sapphire crystal glareproofed on both sides. The watch functions had to be significantly improved and optimised to enable this energy-consuming acceleration. In this new jumping seconds model, the ultra-fast stopping and restarting of this large chronograph hand 10 times a second calls for a greater amount of energy. The original El Primero movement sweeps around the dial in 60 seconds in tiny 1/10 th of a second jumps, meaning the chronograph hand performs 600 jumps a minute. When it is stopped, the hand-locking system brings the hand to an extremely precise halt, since the brake-lever positions the hand between two of the 100 teeth on the chronograph wheel, thereby further enhancing the precision of the 1/10 th of a second read-off. One particularly important feature of this model lies in the chronograph stop function. This significant new feature is backed by six-times larger divisions on the outer dial ring (10 seconds instead of 60) enabling totally accurate readings to within 1/10 th of second. The jumping seconds chronograph reinvented by Zenith is distinguished by a chronograph hand completing its rotation in just 10 seconds and thereby considerably improving the 1/10 th of a second read-off. With this model, Zenith is clearly reasserting its brand territory, meaning that of pure timekeeping performance. It is worth nothing that, for the user of this chronograph, the 1/10 th of a second is a natural unit of the decimal system, whereas the 1/8 th or 1/5 th of a second shown by so-called classic jumping seconds hands are far harder to perceive. The chronograph hand makes a complete dial rotation in 10 seconds and each of its steps precisely indicates a 1/10 th of a second against the 100 graduations engraved on the dial. To achieve this, Zenith has considerably refined and improved the principle of jumping seconds. While measuring such a short fraction of time is a genuine accomplishment in itself, making it perfectly readable is yet another. Directly connected to the regulating organ, each jump of the central chronograph hand marks a 1/10 th of a second, the smallest division of time measured by a series-produced mechanical calibre.
![zenith el primero chronograph zenith el primero chronograph](https://watches83.com/20336-thickbox_default/zenith-el-primero-cal-400-vintage-swiss-chronograph-automatic-watch-ref-20-0210400-spectacular-.jpg)
Seeking to reduce the energy required naturally entailed making the movement wheels as light as possible, which is why some of them are in silicon – a material three and a half times lighter than its traditional counterparts.The El Primero Striking 10 th renders each pulsation of its motor clearly visible. The ultra-fast stopping and restarting of this large chronograph hand 10 times a second calls for a huge amount of energy. The original El Primero movement sweeps around the dial in 60 seconds in tiny 1/10th of a second jumps, meaning the chronograph hand performs 600 jumps a minute. When it is stopped, the hand-locking system brings the hand to an extremely precise halt, since the brake- lever positions the hand between two of the 100 teeth on the chronograph wheel, thereby further enhancing the precision of the 1/10th of a second read-off. One particularly important feature of this model lies in the Chronograph stop function.
![zenith el primero chronograph zenith el primero chronograph](https://cdn.shopify.com/s/files/1/0606/5325/products/Zenith_El_Primero_Cal_3019_PHC_automatic_gold_watch_at_A_Collected_Man16.jpg)
This significant new feature is backed by six-times larger divisions on the outer dial ring (10 seconds instead of 60) enabling totally accurate readings to within 1/10th of second. The Jumping Seconds chronograph is distinguished by a chronograph hand completing its rotation in just 10 seconds and thereby considerably improving the 1/10th of a second read-off.