Valjoux 7750 – Valjoux’s Greatest Invention

No wristwatch is complete without its movement. The movement is one of the most fundamental components of any timepiece. Quite simply, it is the mechanism that keeps your watch ticking. Without it, your wristwatch would be dead.  

Every watch enthusiast has their own opinions on their favorite and least-preferred movements. That being said, one of the most talked-about watch movements in the history of horology is the Valjoux 7750. Some argue that the Valjoux 7750 is one of the most exceptional chronograph movements ever made. Others, on the other hand, would say that the movement is cheap, generic, and, to an extent, outdated. Indeed, the debate over the Valjoux 7750 has gone on for years.

With that said, let’s find out more about Valjoux and the making of the 7750. In addition, we will also learn about what is inside the Valjoux 7550 and how it acquired its reputation. By taking a closer look at this movement, we’re going to show you just which side of the debate was right about the Valjoux 7750 after all.

Valjoux – The Foundation of Many

Photo from eBay

Valjoux is a Swiss manufacturer renown for producing quality mechanical watch movements. Valjoux derived its name from the original address of the company, located in Joux Valley, which is otherwise known as Vallée de Joux. Valjoux was an independent manufacturer until they joined AUSAG in 1931. AUSAG, now known as Swatch Group, is a conglomerate that took in numerous independent movement manufacturers. Many of the manufacturers AUSAG has bought throughout the years are extremely well-known names. These include, among others, Blancpain, Hamilton, Longines, Oris, and of course, Valjoux.

The competition over the creation of newer, more innovative, and more technologically advanced movements has always been an intense one in the watch industry. In 1969, Zenith released the El Primero, a new chronograph watch that possessed the most precise automatic movement they ever invented. Dubois Depraz, in collaboration with Breitling, Tag Heuer, and Hamilton, also unveiled their latest ground-breaking movement, which they called the Chronomatic movement. While these were all brainchildren that rocked the waters of the horology field, none of them could compare to the revolutionary quartz tidal wave that changed the landscape forever.

Quartz Crisis – End of an Era 

From the moment it emerged on the market in the early 1970s, the quartz movement has dominated the market with an iron fist. After just a few years, most people were turning to their Seikos and other quartz-operated timepieces, while the old mechanical wristwatches were left at home gathering dust. The quartz movement proved to be the nightmare of every traditional Swiss movement manufacturer. Not only were quartz movements incredibly accurate in keeping time, but they were also much cheaper to make.

With such heavy competition, Valjoux had to think of something quick. They hired a young watchmaker named Edmond Capt to provide them with a movement that could compete with Zenith, Dubois, and most importantly, the all-powerful quartz movement. What they needed was a sturdy and dependable movement that was easy to manufacture. In addition, the new movement had to be chronograph-rated and feature a quick-set day and date function. Their expectations were high and Edmond had to meet their requirements as soon as possible. 

Thankfully, Capt was a quick thinker. He made use of the Valjoux 7733 as the foundation for his new movement. The Valjoux 7733 is an old chronograph movement of Valjoux’s, released in 1969, with features such as a small seconds sub-dial, a seconds counter, but no day or date function. Capt’s new movement kept the basic timekeeping functions that the Valjoux 7733 also provided. His most innovative customisation to his new movement was having the column wheel replaced with a lever and camp system. Due to this adjustment, it became easier for Valjoux to mass-produce this upgraded chronograph movement since it was more affordable and required less precision. With the additional help of computer technology, Capt’s invention, the Valjoux 7750, became a reality.

During the first year of its release, the Valjoux was able to sell 100,000 units of the 7750. It looked like a bright enough future for the 7750, but dark clouds revealed themselves soon enough. Even with such an ingenious design, it was not enough to challenge the quartz movement. In 1975, both Zenith and Valjoux succumbed to their shrinking markets. Zenith had to discontinue the El Primero while Valjoux halted the production of their Valjoux 7750. In addition, the managers of Valjoux planned to destroy the molds and dies for the Valjoux 7750 as well. Capt, who viewed the 7750 as one of his best creations, was affronted by the thought. He decided to keep the molds and dies of the 7750 in the hope that he might one day still be able to use them.

You might think, at this point, that Valjoux and the 7750 seemed to be on their last legs. Thanks to Capt’s actions, however, a spark of hope soon revealed itself to the mechanical movement industry.

Re-igniting the flame

As mentioned, the quartz movement took the 1970s by storm. The trend of quartz-operated timepieces remained strong and showed no signs of stopping. For the Swiss companies to survive what came to be known as the Quartz Crisis, they had to consolidate. AUSAG and another conglomerate named SSIH merged to become what we know today as the Swatch Group. This newly made group went on to integrate with Piaget and later bought Heuer in 1982. 

In the next decade, although quartz remained king, the demand for mechanical movements recommenced. The 1980s was the dawn of a new era for automatic watches. After the formation of the Swatch Group occurred, Valjoux merged with another movement manufacturer known as ETA. A collaboration between the two Swiss companies took place and led to the birth of the Valjoux/ETA 7750. This improved 7750 showcased a highly customizable base and 4Hz beat rate.

One of the first watchmakers to take advantage of the latest 7750 was IWC. Technical director Kurt Klaus opted to use the 7750 as the base for their newest invention, the Da Vinci Perpetual Calendar Chronograph. Kurt famously designed the Da Vinci Chronograph entirely by hand instead of using computers. The decision was a good move and gave the timepiece a distinguished reputation that added to its classic design. Thanks to the success of the Da Vinci, IWC returned to the 7750 for yet another project. As a commemoration of the company’s 125th anniversary, IWC manufactured the Destriero Scafusia. For this watch, IWC made use of yet another customized 7750 that featured a flying tourbillon, a minute repeater, a split-second chronograph, and a perpetual calendar.

The success of IWC’s 7750 watches eventually led the watchmaking company Fortis to also adopt the ETA/Valjoux 75750 into their crafts. Fortis had to modify the 7750 calibre as their target market – Russian cosmonauts – were dissatisfied with the lack of an alarm feature in the 7750. In order to fix this issue, Fortis hired a watchmaker named Paul Gerber to design an alarm that could pair well with the 7750. As a result, Fortis was able to develop the first automatic watch with an alarm. Aside from that, Gerber also made other modifications. He added a second spring barrel to help power the alarm in the timepiece and made adjustments to the rotor so that it could better supply power to the barrel.

As time passed by, more and more watchmakers understood the appeal of the ETA/Valjoux 7750 and started to incorporate it into their products. All these different watchmakers had different needs and requirements to fulfill, and so each of them modified the 7750 to meet the standards of their specific target audience. Over time, there became hundreds of variations of the 7750 out in the world, populating the various case backs of numerous watches. As a result, the 7750 has become one of the most frequently used movements, with many unique versions of itself in the ocean of timepieces out there.

Anatomy of the 7750

Now that we’ve gone through the history and the arduous journey undergone by the Valjoux 7750, it’s time for us to take a look at what makes up the composition of this mechanical movement.

First of all, the 7750 is a mechanical, manual-wind movement that uses a three-plane cam system to operate its mechanisms. The standard 7750 has subdials at the 6, 9, and 12 o’clock positions. The original Valjoux 7750 units contained 17 jewels, while most modern ETA 7750 variants hold 25 jewels, which allows for less wear and tear. The movement comes with a day/date function positioned at the 3 o’clock position of the timepiece. However, not all versions of the 7750 have this feature since some manufacturers opt to remove the day and date aperture to offer a cleaner, less cluttered look on the dial. The original 7750 contained mechanisms that were partially made out of plastic. More modern, modified 7750s frequently replace the plastic parts with metal, as it is more durable and sturdier. Contemporary models of the ETA 7750 also exhibit a faster frequency. These days, the 7750 produces 28,800 vibrations per hour instead of 21,600 from previous versions.

Some modified variants of the 7750 have been manufactured on a wide scale. Apart from the base 7750 model, we also have the 7751, 7753, and 7754 movements. Out of all these units, the 7751 has the most additional features. The 7751 comes with a central date hand, a day and month sub-dial, and a sub-dial for moon phases. Following that, we have the 7753 movement. Unlike other ETA/Valjoux 7750s, the 7753 variant has its sub-dials positioned in the 3, 6, and 9 o’clock positions of the main dial. The 7753 also positions the date aperture at the 4 o’clock position of the watch face instead of the usual 3 o’clock. Lastly, we have the final version, the 7754. The one thing that the 7754 has that other models do not is a GMT hand. That said, aside from the mentioned differences, all ETA/Valjoux 7750s operate fairly similarly otherwise.

7750’s Notoriety

Despite the marvelous feats the 7750 attained throughout the years, it still has its fair share of doubters and naysayers. Why do some people dismiss the 7750? 

Cheap

Over the years, the 7750 has become the go-to movement for many watchmakers for its customisable capabilities and affordability. Other watch fanatics, however, argue that the cheapness of the 7750 brings down the overall value of the watch. Since the watch industry uses the 7550 in all categories and types of timepieces, many argue that the contrast set up between luxury and more economic watches is devalued by the presence of the 7550. Many watch wearers would be displeased by the knowledge that their luxurious $3,000 watch uses the same movement as a more budget wristwatch worth $300.

Generic and Mundane

People can indeed get tired from seeing the same thing over and over again. As we’ve mentioned, since this mechanical movement appears in a vast number of different watches, the architecture of the ETA/Valjoux is simply too ubiquitous and has become too mundane for many watch enthusiasts. This is why some would prefer in-house movements for their luxury timepieces, as it brings to the table something that is a little more distinct and sophisticated. To them, the ETA/Valjoux 7750 is just too generic and overused, bringing down the exclusivity and class of their luxury timekeeper.

Cam-Actuated

There is an ongoing debate between the strengths of column-wheel chronographs as opposed to those of cam-actuated systems. Although the performances of both are nearly identical, some still prefer column-wheel chronographs. The naysayers of the cam-actuated system have claimed that because the 7750 is cam-actuated, when the watch starts running, it is frequently accompanied by a sudden jerk of the seconds hand. In reality, this is actually because the gears of the cam-actuated mechanism are merely fixing themselves before initiating the system. As opposed to the supposed jerkiness of the cam-actuated system, some argue that chronograph movements that use a column wheel tend to run smoother. The pushers in the cam-actuated system have also been criticized as being harder to press than the pushers present in column-wheel movements.

It all boils down to preferences

Ultimately, none of the reasons mentioned above are factual. In the end, it all comes down to what a person likes and what they dislike. Collectors and enthusiasts alike may regard the ETA/Valjoux 7750 as banal, but it also has strengths that they can not deny.

The 7750 has proven itself to be an absolute workhorse. Despite being a relic from the past, this humble automatic movement has survived all sorts of adversities and advancements and continues to produce satisfying results. It may be generic, but there is a reason why so many highly-regarded watchmakers have chosen the 7750 for their quality timepieces.

Valjoux 7750 Watches

1. IWC Da Vinci Perpetual Calendar Chronograph

First on the list is a watch that was briefly mentioned earlier in the article, the IWC Da Vinci Perpetual Calendar. As the name reveals, Leonardo Da Vinci was the inspiration in designing this particular IWC Perpetual Calendar. The IWC Da Vinci was the first in its series to be operated by a mechanical movement. A caliber known as the IWC 79261 controlled the inner machinations of the watch. You might not be able to tell from the name alone, but the IWC 79621 is actually a Valjoux 7750 that was heavily modified to cater to the needs of the IWC Da Vinci. As stated previously in the article, it was Kurt Klaus who brought this movement to IWC. Klaus refused the use of computers and chose to modify the movement by hand. The resulting IWC Da Vinci timepiece was a huge success and it marked the comeback of luxury mechanical watches amidst the era of quartz.

Photo by Time and Watches

2. Sinn 358 Diapal Pilot Chronograph

The Diapal Pilot is an example of a modern watch that uses the Valjoux 7750. In this modified variant of the Valjoux 7750, 25 jewels hold the movement to prevent the apparatus from experiencing additional wear and tear. The Diapal Pilot is the first and only model of the Sinn 358 Chronograph series to utilize the Valjoux 7750. Later iterations of the Sinn 358 replaced the 7750 either with a Sellita SW 500 or a Concepto C99001. Funnily enough, both of these movements based their designs and functions on the 7750. Sinn uses all three mechanisms in different versions of their Instrument Chronograph series. The three watch systems may not be the same, but they all promise reliability and durability.

Photo by Sinn

3. Tag Heuer Carrera Chronograph Calibre 16 DD Automatic

Horology history associates Heuer and Valjoux in several instances. Aside from their mutual affiliation with the Swatch Group, Valjoux has also supplied many Heuer timepieces with 7750 calibers. In 2005, Heuer released their newest Carrera Automatic, which featured their latest movement, the Calibre 16. In making the Calibre 16, Heuer introduced the world of watches to their version of a modified Valjoux 7750. The Calibre 16 is utilized in several timepieces from different Tag Heuer collections, including Carrera, Link, and Aquaracer. Two years ago, Heuer stopped using the 7750 as the base for their Calibre 16 and replaced it with the Sellita SW 500. The new Calibre 16 now occupies the casebacks of Heuer’s main ranges of chronograph watches namely the Aquaracer, Carrera, and Formula 1.

4. Hamilton Khaki Aviation X-Wind Automatic 

Hamilton created the X-Wind Automatic to commemorate their association with the US Airmail. Although they found that the 7750 had a decent enough performance, they were not entirely satisfied with the longevity of the 7750’s power reserve. After a few customizations to the Valjoux 7750 base, Hamilton produced their very own H-21. The upgrades resulted in a modern and more accurate 7750 with a new power reserve that can last for a whopping 60 hours. Compared to other watchmakers, Hamilton made fewer modifications to the base 7750. Despite this, the H-21 is one of the most notable innovations in the Hamilton lineup. The movement was later awarded COSC certification, and the Khaki Aviation X-Wind Automatic became a hit among Hamilton’s audience. 

Photo by Hamilton

5. Breitling Avenger II

Here’s a fun fact — Leonardo Dicaprio wore this watch in the 2006 movie Blood Diamond. The timepiece appeared in many scenes and is one of Breitling’s most well-known models. Like every other watch in this list, Breitling made several adjustments to the Valjoux 7750. Through their efforts, the company brought the Breitling 13 caliber to the world of horology. The Breitling 13 features a frequency of 28,800 semi-oscillations per hour with a 42-hour power reserve. Due to its unidirectional ratcheted bezel, the rotor of the Avenger II can move freely. The result? A lively timepiece that “wobbles” gleefully on the owner’s wrist. 

Photo by Breitling

Final Thoughts

To this day, the 7750 is arguably one of the most recognizable and iconic automatic movements. There aren’t many movements in the scope of horology that have made an impact quite like it. The ETA/Valjoux 7750 is a rugged and easily modifiable mechanism currently used by many reputable companies. Although it was first named the Valjoux 7750, today, it is officially called the ETA 7750. Despite the renaming, however, most people still refer to it as the Valjoux 7750. Although it is not the most advanced movement, a finely-tuned Valjoux 7750 can reach heights that are equal to just about any modern movement out there.

No matter which side of the debate you’re on, it is undeniable that the Valjoux 7750 is of great importance to watch history. Not only was the 7750 a component that gave relevance to the remnants of Swiss watchmakers, but it was also a crucial innovation responsible for reviving the whole industry of mechanical movements. Just as importantly, it was the movement that allowed so many watch manufacturers to unleash their creativity, making broad modifications to the Valjoux 7750 to best suit their purposes. Released over the decades, these modified variants prove, time and time again, that the Valjoux 7750 is as strong as ever. Valjoux is not out of the watch game and does not plan to leave anytime soon.


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Featured Image by: Wikimedia Commons

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