Ginault Caliber 7275 Ocean Rover

Ginault Caliber 7275

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Ginault Caliber 7275 Ocean Rover

Brand Ginault
Caliber Number 7275
Base Caliber
Clone Caliber
4.65mm thick
Jewels 25
Power Reserve 38 hours
Vibrations Per Hour 28,800 bph
Hairspring Nivarox
Hacking? Yes
Quick Date? Yes
Functions Hours, minutes, central seconds, date at 3:00
Country of Manufacture Unconfirmed
Known Models
Ginault Ocean-Rover

The Ginault caliber 7275 is a 25 jewel automatic movement found in Ginault Ocean-Rover watches. This movement is a clone of the ETA 2824-2.

Specs From Ginault:

“Ginault Caliber 7275. 25 Red Jewels, Rh45 Rhodium-Copper Alloy Main Plate & Bridge, Blue Steel Screws, GC31 Gears, Nivarox Hairspring, Nivarox Mainspring, WJL Shock Absorber, Date, Hour/Minute/Second Hands, 28,800 BPH, 38 Hours Power Reserve. Cut, Machined, Assembled and Fine Tuned in the United States.” –source

Made in USA?

The dials of the newer pieces state that they are Hand Built in America. Older Ocean-Rover models were engraved with Made in USA on the casebacks. While this caliber has sparked controversy in the watch community, what we think we know is this:

  • Mainspring: Swiss made
  • Hairspring: Swiss made
  • Jewels: Swiss made
  • Shock Absorber: Made in China

As quoted above, Ginault states that the caliber 7275 is cut, machined, assembled and fine tuned in USA.

ETA “Clone” or Fake ETA?

ETA “clone” does not mean fake. ETA clone means that the movement design is based on the original designs that ETA used when creating the 2824-2 movement. The 2824-2 was introduced in 1982, so the patents have expired (utility patents expire after 20 years). For this reason, it is possible to produce a movement based on the original design of the ETA 2824-2, and many have done so as it is perfectly legal. If the movement was marked “ETA” then it would be considered to be a fake. Similar to the watch it is cased in, if it were marked as Rolex Submariner, then it would be considered to be a fake watch. Without any reference to Rolex, even though it looks the same, it is considered an homage or clone.

The concept of “clone” movements often causes a mixture of controversy among the watch community. You’re welcome to share your thoughts in the comments below.

BTW: You can buy an ETA 2824 clone here for $59 or an original one here for about $200.

Powertrain Gear Materials:

On the official information page about the caliber 7275, Ginault states that they use their own proprietary alloy for the gears in the movement’s powertrain.

“Simultaneously, the materials used in making gears have to be able to endure decades of wear and tear. While most of our fellow watchmakers in Europe and Asia use copper or brass, we have developed our own copper alloy to make the powertrain gears. We call it GC31. GC31 has strength equal almost to that of steel. It is also antimagnetic. After brushing and polishing, it exhibits a distinctive light, sharing the reflective property of gold.”


If your caliber 7275 powered watch is not keeping proper time, it’s possible that the movement has become magnetized. You can purchase a demagnetizer here. This is what Ginault says about magnetism:

“Cal.7275 is prone to magnetism. If a movement is magnetized it will run wildly. Try to keep the watch away from magnets. There are many hidden magnets inside electronics such as cell phones, speakers, laptops, and airport scanners.” –source

Chronometer Rating:

The Ginault Ocean-Rover says Precision Chronometer on the dial and watches powered by this caliber 7275 include a movement certificate detailing the results of 6 weeks of testing. The certificate includes a movement serial number, however, no matching numbers can be found on the movement.

From the certificate:

“The goal is to regular every one of our movement’s MDR (mean daily rate) as close to 0 as possible for highest precision and accuracy. To achieve this, each 7275 caliber we made goes through a 6 week journey on an automatic winder to simulate real world use. Our master watchmaker clocks, and regulates the movement once every seven days within this 6 week period. This is a true arduous task but the only way to make sure each movement functions precisely and accurately.”

Ginault 7275 Movement Certificate Cosc

This “Precision Chronometer” rating and testing is not to be confused with being COSC (Contrôle Officiel Suisse des Chronomètres) certified, which is not applicable to this movement since it is not Swiss made. This does not mean that the movement does not keep time within Chronometer specs, it just means that it is not officially tested and certified by COSC.

According to COSC:

“Compliance with the definition of a chronometer is approved by a neutral official body, which carries out the checks on the watch or movement, and issues an official certificate. In Switzerland, each chronometer is unique, identified by a number engraved on its movement and a certificate number issued by the COSC.” –source

Movement Markings:

The movement is not signed Ginault, nor are there any stamps to be found from any known manufacturers. There are no markings whatsoever: no jewel count, no caliber number, no origin reference, no movement serial number.

Actual Power Reserve:

Although the Ginault 7275 automatic movement is rated at 38 hours power reserve, the movement certificate mentioned above stated that this movement’s actual power reserve tested at 43 hours. This may be higher or lower depending on the movement itself.

Noisy Rotor:

As with many automatic watch movements, from affordable microbrand watches to Rolex, there have been reports of the rotor of the 7275 being loud. The rotor is a ball-bearing style, and rotor noise is not uncommon. Here is what Ginault says about this:

“Some members have also reported to us that they tend to hear the rotor noise when the power reserve is low. This is because when the power reserve is low, the mainspring is loose, the rotor in the back turns more easily. When the power reserve is healthy or full, the rotor in the back also turns less due to a tighter mainspring.” –source

Ginault Caliber 7275 Ball Bearing Rotor


Additional Images:

Ginault Caliber 7275 Movement

Ginault 7275 Microbrand Movement

Video Review:

Additional Resources:

Share your thoughts and experience with the Ginault caliber 7275 in the comments below…

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Great write up! Can anyone tell me what WLJ stands for in terms of the shock absorber? Why wouldn’t they just use Incabloc?

Scottie Dippin
Scottie Dippin

It’s Chinese. I think I read somewhere that Ginault said Incabloc wouldn’t sell wholesale, but I am not positive.

Tsung Chi
Tsung Chi

Wang Jia Ling. Chinese shock-absorber.

R. Tores
R. Tores

There are alot of doubts about this movement being made in USA. I wish these new brands would just make a great watch and stop with the marketing about being from USA. The brands that started doing it first thought that they were going to make a fortune by putting USA on the dial or back but turns out no one cares.

By the way…HAND BUILT IN AMERICA could mean Mexico couldnt it?

Jacques Rougeau
Jacques Rougeau

Or Canada 😀


This is the first time I ever saw a movement described as having ‘red’ jewels opposed to just jewels. I am an amateur, but I always thought jewels are based on rubies and ruby is red/pink. Are there other colored jewels?


Marketing bull. No different than half the crap rolex comes up with in their literature.


I think it’s far fetched of this brand to say made in USA or hand built in America on the dial. This movement looks an awful lot like other Chinese E.T.A. movements I’ve seen in good replica watches. If it’s proudly made in America then would it not be marked USA on the inside.


There are a lot of brands that put USA or America in their marketing and even on the watches. 9.9 times out of 10 it’s a stretch.


[…] This quite informative and there's a good hi-rez vid of the movement in action at the endGinault Caliber 7275 Watch Movement | Reply With […]

mark goulde
mark goulde

i think this movement is made in usa as ginault claims. did you see the screw heads? they are atrocious!

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