Introducing Zenith chronograph models for men in their 40s [Chronomaster, Defy, Pilot]

Let's take a look at Zenith's specialty, chronograph-equipped models, and introduce some recommended models for men in their 40s. Zenith has a history of making a significant contribution to the practical application of automatic chronographs through the development of the legendary El Primero movement. With this historical background, Zenith continues to offer a lineup of high-spec chronograph movements.

Zenith Chronograph Models: A Look Inside

　This time, we will be introducing Zenith chronograph models aimed at men in their 40s. First, let's take a look back at the iconic El Primero, Zenith's pride and joy, the automatic chronograph movement.

　El Primero is the official nickname given to the Caliber 3019PHC, released in 1969. Meaning "No. 1" in Spanish, it emphasizes that it was the world's first automatic chronograph movement. In fact, the Caliber 6139 (Seiko) and Caliber 11 (jointly developed by four companies including Heuer Leonidas) were released, so there is room for debate as to which was the world's first, but there is no doubt that it is one of the ancestors of automatic chronographs, which has made a significant contribution to the advancement of watchmaking technology.

　This time, we will be looking at the latest movement that follows in the El Primero lineage, and introducing some attractive models.

"Chronomaster Sport Blue" Ref. 03.3114.3600/51.M3100

　The El Primero, which inherited the Caliber 3019PHC, features a 10 vibrations per second frequency and a horizontal clutch for controlling the chronograph. The gear train on the case back, along with the movement of the horizontal clutch, makes it easy to observe the movement.

　The Caliber El Primero 3600, Zenith's flagship automatic chronograph movement, retains its signature features, including a 10 vibrations per second (36,000 vph) beat, while adding new appealing features. A notable feature is the central chronograph seconds hand, which rotates once every 10 seconds. While a typical chronograph movement rotates once every 60 seconds, making it difficult to read the tenths of a second, this model makes it easy. Furthermore, the use of a silicon escape wheel and anchor improves magnetic resistance, while increasing operating efficiency and extending the power reserve to approximately 60 hours. In these respects, this movement can be described as one that inherits tradition, enhances its appeal with the addition of new functions, and enhances its basic performance.

　The Chronomaster Sport is equipped with the Caliber El Primero 3600, a model focused on its ability to measure time to the tenth of a second. Among these, the Chronomaster Sport Blue, introduced here, boasts modern styling with three subdials painted in blue, light gray, and dark gray, a design inherited from the first El Primero model, the A386. Reflecting the distinctive movement of the chronograph seconds hand, a 60-second counter is located at the 3 o'clock position, a 60-minute counter at the 6 o'clock position, and a small seconds at the 9 o'clock position. The stainless steel bezel insert creates a sporty impression while supporting timekeeping with a tenth of a second scale.

"Chronomaster Original Triple Calendar" Ref. 03.3400.3610/39.M3200

　The next model we'll introduce is the Chronomaster Original Triple Calendar, a model deeply connected to the history of Zenith and the original El Primero (Caliber 3019PHC) introduced above. It's important to note that the Caliber 3019PHC was designed from the very beginning as a movement to accommodate a triple calendar and moon phase. While many designs are made with future expandability in mind, it's noteworthy that this movement anticipated functional expansion during the early stages of automatic chronograph movement development, when the technology was not yet established and securing space for each mechanism was a major issue.

　Furthermore, the Chronomaster Original Triple Calendar reproduces the design of the early model "A386" equipped with the Caliber 3019PHC, and is equipped with the Caliber El Primero 3610, which adds a triple calendar and moon phase to the latest version of the El Primero, the Caliber El Primero 3600, so you can see that it is deeply connected to the watch's history.

　The dial of this watch is slate gray, adding a chic touch to the sporty silhouette. The triple calendar consists of a month display at 2 o'clock, a date display at 4:30, and a day of the week display at 10 o'clock. Unique to the Caliber El Primero 3610, the 60-second counter is at 3 o'clock, the 60-minute counter and moon phase display are coaxially arranged at 6 o'clock, and the small seconds is at 9 o'clock. A scale is engraved around the outer edge of the dial to support measuring tenths of a second.

Defy Extreme Ref. 97.9100.9004/02.I001

　While the Chronomaster Sport is a modern and sporty model, the most avant-garde and stylish sports model in Zenith's collection is the Defy Extreme, which literally boasts "extreme" features.

　This model's chronograph function allows for measurements to the astonishing 1/100th of a second. By pressing the pusher at the 2 o'clock position, the central chronograph second hand starts moving vigorously, making one rotation per second and measuring 1/100th of a second on a scale with 100 divisions per rotation.

　This raises a question: Being able to divide one second into 100 parts means that the internal mechanism must operate at an equivalent cycle, but how is this achieved?

　The answer is that there is a separate gear train for displaying the time, which operates at 36,000 vibrations per hour, and a separate gear train for the chronograph function, which operates at an ultra-high beat of 360,000 vibrations per hour. The only things they share are the winding mechanism and main plate, and since they each have their own balance wheel and barrel, they can be said to be completely independent. The mainspring for the time can be wound by an automatic rotor, but the chronograph can only be wound manually.

　This distinctive movement is housed in a titanium case with an edgy shape that echoes the iconic 12-sided bezel of the Defy collection. The dial is made of sapphire crystal, allowing the movement's mechanism to be viewed.

"DEFY Skyline Chronograph" Ref. 03.9500.3600/21.I001

　The Defy Extreme introduced earlier was, as expected, an extremely extreme model. The core model of the current Defy collection is the Defy Skyline, which also includes a chronograph model.

　The design of the current Defy Skyline collection is a modern reinterpretation of the octagonal form of the 1969 Defy Ref. A3642. It features a silhouette that combines an architectural, three-dimensional case with a 12-sided bezel, and is also notable for its edgy details and matching bracelets.

　The dial design of the Defy Skyline Chronograph is also based on a dodecagon and straight lines, with bar-shaped hour and minute hands and bar indexes displaying the time. In contrast to this, the circular 60-second counter at 3 o'clock, 60-minute counter at 6 o'clock, and small seconds at 9 o'clock create a contrasting effect.

　The dial also features a star pattern, inspired by Zenith's "double Z" logo from the 1960s, arranged at equal intervals, adding character to the dial while reducing light reflection and ensuring visibility.

Pilot Big Date Flyback, Ref. 03.4000.3652/21.I001

　Finally, when talking about Zenith, we cannot forget the "Pilot" collection. Zenith was one of the first to recognize the widespread use of watches in the aviation industry, and applied for the trademark "Pilote," meaning pilot in French, in 1888 and the English "Pilot" in 1904. Since then, pilot models have been included in the lineup for a long time.

　The current Pilot collection, which was revamped in 2023, features a case shape that blends classic and modern, with a round case and lugs that draw gently straight lines, and its design code is a dial with horizontal grooves that are reminiscent of the metal sheets used on the exteriors of past aircraft.

　The Pilot Big Date Flyback featured in this article is a model equipped with the flyback function, an important feature in pilot chronographs. The flyback function allows the chronograph to instantly reset to zero by operating a pusher while measuring time, and then restart measuring time.

　Let me explain the benefits of this. A typical example is when an aircraft flying at high speed starts from point A, passes through point B, and then measures the time it takes to reach point C. With a normal chronograph, you start the measurement at point A, stop it at point B, then reset and restart. However, this results in a time loss until the time is restarted, and in an aircraft flying at high speed, the error becomes too large. This is why a flyback function is needed, which allows for simultaneous resetting and restarting.

　The flyback function can be described as a function for "error-free" measurement. This model also features a big date display that displays the date "error-free." The big date on this model features a mechanism that stabilizes the display within 0.03 seconds of starting the movement, minimizing the possibility of misreading the date before and after the date change. Furthermore, as its name suggests, the large display on two discs at the 6 o'clock position also provides an advantage for visibility.