Three models from the Caballero Collection by Singer Reimagin, based in Geneva, Switzerland, will be arriving in Japan. The Caballero Collection is based on the theme of "Reborn," and is characterized by its long power reserve of approximately 144 hours thanks to a total of four barrels, as well as stable accuracy.
The Singer Reimagined Cal. ST5000, commonly known as the "Caliber 4 Solotempo," features two horizontally arranged double barrels, for a total of four barrels, providing a power reserve of approximately 144 hours and stable accuracy.
Singer Reimagined "Caballero Collection" arrives in Japan
Singer Reimagined is a watch brand based on three pillars: "Reimagined," "Restored," and "Reborn." The Caballero Collection, which symbolizes "Reborn," will be introduced to the Japanese market. Based in Geneva, Switzerland, Singer Reimagined is a watch brand born under the philosophy of "redefining the concept of luxury watches through innovation and design," and is inspired by the philosophy of Singer Vehicle Design, which established a global reputation for recreating the Porsche 911. In Japan, a partnership with Office Mugino was announced in December 2025, and the brand has officially begun operations.
With this background, Singer Reimagined's Caballero collection is named after the Spanish word for gentleman. Reflecting this, the design codes are restrained elegance and precision, and the line-up includes three-hand models equipped with the brand's first in-house movement, the Caliber 4 Solotempo (also known as Cal. ST5000).
Caliber 4 Solotempo with long power reserve and high basic performance
The Caliber 4 Solotempo concept is to improve timekeeping accuracy through a stable energy supply. Its technical core is the unique 2x2 barrel structure that gives it its nickname. This means that two pairs of barrels drive the movement in parallel.
As the mainspring inside the barrel becomes less wound, it typically experiences a drop in torque curve, eventually resulting in an insufficient supply of energy to power the balance, resulting in a loss of precision.
Therefore, in this work, by arranging the double barrel in parallel, the supplied energy is stabilized for a long time, and it drives an extremely long power reserve of approximately 144 hours while maintaining precision. In addition to providing high performance, it is also designed to be used for many years.
Furthermore, the Caliber 4 Solotempo adopts a modular structure with an eye toward future movement developments, and it is expected that models equipped with complex mechanisms will be released in the future.
Elegant design of the Caballero collection
The Caballero collection, powered by the Caliber 4 Solotempo, is available in three color variations: black, green, and blue dials, all featuring a simple dial design without indices and featuring a toothed gold flange, a Singer Reimagined signature.
Another distinctive feature of the Caballero collection is the design in which four jewels can be seen from the dial side, symbolizing the Caliber 4 Solotempo, which has four barrels.
Manual winding (Cal. ST5000). 33 jewels. 28,800 vph. Power reserve approximately 144 hours. Stainless steel case (diameter 39mm, thickness 10.5mm). Water resistant to 50m. Price: 429 million yen (tax included).
