The Sellita SW200-2 Power+ Makes Its Debut in the Formex Essence Space Ghost

Space Ghost is returning in 2026. At first glance, it looks almost the same—it once again features a fascinating meteorite dial over 4.5 billion years old, a patented shock-absorbing case, a new generation of bracelets, and butterfly clasps. This time, however, it brings one major innovation hidden beneath the dial.

In fact, the Space Ghost was the first Formex model to be equipped with the all-new Sellita SW200-2 Power+ movement.

A 24-hour longer power reserve

The Sellita SW200 caliber has long been one of the most widely used Swiss automatic movements. It is reliable, accurate, and easy to service, and can be found in a wide range of renowned brands.

However, Sellita decided to improve the movement, partly in response to pressure from competing movement manufacturers. It did not settle for mere cosmetic changes, however, and carried out one of the most significant upgrades to this caliber in recent years.

The “most noticeable”—and, for owners of watches with this movement, the most significant—change is the extension of the power reserve from the original 41 to 65 hours. The additional 24 hours mean that the watch will easily keep running all weekend, even when set aside, so you can be sure it will still be running on Monday morning—all you have to do is put it on and go. No more need to wind the movement or set the time.

What we watch enthusiasts will particularly appreciate is the fact that the longer power reserve was not achieved by reducing the frequency, as is common with some movements.

Greater reserve without compromise

Even in modern movements, we often find that extended power reserves are achieved by reducing the frequency from 4 Hz to 3 Hz. One example is the widely used Powermatic 80, employed by brands within the Swatch Group. Fortunately, Sellita took the opposite approach.

The new SW200-2 Power+ maintains a frequency of 28,800 half-vibrations per hour (4 Hz), which is considered the ideal compromise between accuracy, operational stability, and resistance to external influences. Maintaining this frequency is also important from the perspective of COSC certification, which Formex traditionally applies to its movements.

This increased power reserve was achieved through a complete redesign of the movement itself. Another welcome piece of news is that the new movement is the same size as the older SW200-1 version, so introducing this new model poses no complications for watch manufacturers. The movement parts are no longer interchangeable with one another.

It’s not just the spring that’s new

Sellita has changed much more than just the balance spring. The caliber has been fitted with a new balance spring assembly featuring a different geometry and a longer mainspring, which has more coils and can therefore store more energy. The gear train has also been completely redesigned, with the tooth profiles optimized to reduce energy loss during power transmission. In addition, the wheels of the new movement are color-coded to distinguish them from those used in the Sellita SW200-1 movement, which in turn makes the work of service centers and watchmakers easier.

The automatic winding mechanism has also undergone an equally important change. Its efficiency has been improved, and it now operates more effectively so that the larger mainspring can be wound more quickly. The result is not only a longer power reserve but also faster attainment of full wind during normal wear.

Greater durability for everyday life

The modernization also addressed durability. The new caliber features a redesigned regulating system, a smaller balance wheel with lower moment of inertia, a new design for the bridges and mainplate, and a more advanced shock-absorption system using Incabloc bearings.

It is precisely these modifications that contribute to better long-term stability and greater durability in everyday use. These modifications also confirm that this is not merely a matter of extending the power reserve, but rather a more sophisticated mechanical design overall, which can now easily compete with movements from other manufacturers, such as the Powermatic 80 from Eta or the G100 from La Joux-Perret.

COSC remains a given

Formex continues to use the highest-grade movement available in the Chronometer Grade version. Each movement thus undergoes independent COSC (Contrôle Officiel Suisse des Chronomètres) certification, which confirms that it meets the strict accuracy requirements for mechanical watches.

In addition to technical changes, the movement has also been given a more modern finish. The previous pearled finish on the bridges has been replaced with a finely brushed surface. Blue-tinted screws are now a standard feature of Formex watches. Formex decided on these modifications primarily because, from the brand’s perspective, they better reflect the contemporary industrial character of most Formex watches.

Space Ghost Is Leading the Way Once Again

It’s no coincidence that the new movement is making its debut in the Essence line and in the Space Ghost model.

Last year’s generation was already a technological pioneer for the entire Essence collection. It introduced a new case diameter of 41 mm, a redesigned construction with a screw-down crown, a new generation of steel bracelet with improved threads on the screw-down links, and a patented butterfly clasp with micro-adjustment, which allows for easy length adjustment without having to remove the watch from your wrist.

Now it is adding another first: the new Sellita SW200-2 Power+ movement, which will gradually appear in other Formex models over the coming months.

The meteorite remains the star of the show

It might seem that the technical aspects will attract the most attention this year, but we mustn’t forget that the Space Ghost model itself has lost none of its charm. Once again, we’re drawn to its magical dial made from the Muonionalusta meteorite, which is over 4.5 billion years old. And nothing has changed regarding the fact that it’s still produced in collaboration with sister company Cadranor, which specializes in dial manufacturing.

For those who haven’t yet noticed the Space Ghost models, let’s add that the dial dazzles with its craftsmanship and texture. The Widmanstätten structure characteristic of the Muonionalusta meteorite stands out beautifully thanks to the rhodium plating, which preserves its silvery luster while protecting the surface from oxidation. Last but not least, it’s worth noting that each piece is a one-of-a-kind original thanks to its unique dial with an unrepeatable pattern.

It is precisely the combination of a material older than our planet, Formex’s patented technical solutions, and the latest generation of Swiss movements that makes the Space Ghost one of the most interesting models currently produced by the brand.

Only 150 pieces a year

Just like last year, the new generation of the Formex Essence FortyOne Automatic Chronometer Space Ghost 0334.1.6643.100 will be produced in a limited edition of just 150 pieces per year. And history is repeating itself, as this year’s production run was snapped up through priority pre-orders by Formex Club members and newsletter subscribers, meaning no pieces made it to public sale.

Did you have your eye on a watch but didn’t get a chance to buy it? Don’t worry—we still have two in stock at Helveti, and we expect more to arrive later this month.