![]() And of course, a rarity then and now, it runs at a higher frequency for greater precision (36,000vph or 5Hz). The compact construction of Zenith’s El Primero uses a column wheel for a smoother operation of the chronograph, and a horizontal clutch to connect the timekeeping gear with the chronograph complication. That is until the year 1969, when not one but three movements were introduced to change the landscape of mechanical chronographs. The Zenith El Primero 1969 trilogy, with the A384, A385 and A386 watchesĪlthough chronograph wristwatches had been around for decades before the El Primero took to the stage, they have always relied on hand-wound movements. All the more reason to celebrate this legendary movement through six watches Zenith introduced in 2021, using the El Primero platform. Zenith has logically embraced this calibre and uses it for a wide array of chronograph watches, ranging from true-to-the-original styles to more edgy and contemporary interpretations. The iconic powerhouse chronograph has stood the test of time, literally, and is more alive than ever. A name that is forever cemented in horological history for being the very first automatic chronograph movement to be presented to the public, all the way back in January 1969. The Zenith El Primero Chronomaster Sport 03.3100.3600/69.M3100 was introduced in 2021.El Primero, the first one. The mechanism oscillates at a frequency of 36,000 vph (4Hz). It includes a hacking seconds function for precision times setting, a lateral clutch, and a skeletonized rotor. It's rhodium plated with fausses cotes embellishment and it's constructed with 35 jewels, 311 components, a shock absorber system, heat blued screws, and a monometallic balance. This Zenith El Primero Chronomaster Sport 03.3100.3600/69.M3100 has a mechanical high frequency second generation El Primero caliber 3600 column wheel movement. It's water resistant to 100 meters/330 feet, it has a 60-hour power reserve at full winding, and the 13.60mm thick case, dial, and movement are all signed. There is a quick set date aperture window between 4 and 5 o'clock, and it has a Certified Official Superlative Chronometer (COSC) rating. It has three raised overlapping subsidiary dials with concentric circle guilloche and black indicator hands, including a silver small running constant seconds register at 9 o'clock, a grey 60-minute chronograph totalizer at 6 o'clock, and there is a blue 60-second register at the 3 o'clock position. The dial is white with applied faceted luminous rhodium plated rectangular hour markers surrounded by a perimeter black minute/1/5 second scale, pointed steel luminous baton hour and minute hands, and a steel sweep foudroyant flying seconds second hand with a red needle tip and a skeletonized Zenith star counterbalance that makes a full rotation in 10 seconds ("Striking Tenth"). The 41mm barrel-shaped solid three-body case, gently curved lugs, bracelet, and flat ceramic black fixed decimal bezel with a white Arabic numeral 1/10th of a second scale, are satin/polished. It has a pull- out signed winding crown, round fluted pump-style chronograph push buttons, and there is an exhibition sapphire display crystal case back secured with 4 screws and engraved with "CHRONOMASTER – 100M – 03.3100.3600," and a serial number. It includes an integral screwed stainless-steel link bracelet with a folding deployment buckle and domed scratch resistant sapphire crystals. This is a stainless-steel Zenith El Primero Chronomaster Sport 03.3100.3600/69.M3100. More about El Primero Chronomaster Sport 2022
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