Timeless Collaboration: The Frederique Constant Slimline Perpetual Calendar
All the best creations come from pure collaboration. When powerful minds and creative geniuses come together, beauty is often the result. The Frederique Constant Slimline Perpetual CalendarPerpetual CalendarA watch complication that automatically tracks the date, day, month, and leap years, requiring no manual adjustment until the year 2100 in most cases. The perpetual calendar demonstrates remarkable mechanicalGo to Perpetual Calendar Glossary is proof.
Frederique Constant, the brand, began in 1988, with a couple, Aletta and Peter Stas, at the helm. A short decade later, the brand was at its first Baselworld exhibit, and by 2000, it moved to a new site in Chêne-Bourg. In 2001, the brand adopted a slogan: Live Your Passion. A series of acquisitions followed, first with Alpina Watches in 2002, then more than a decade later with Citizen. The move with Alpina brought the brand the option of more sports-related watches, while the move with Citizen offered further reach and expansion. In 2006, the new ManufactureManufactureA watchmaking term for a company that designs and produces most of its movements and components in-house, rather than relying on outside suppliers. Being a true manufacture signals deep expertise,Go to Manufacture Glossary building was inaugurated in Plan-les-Ouates.
In between the different acquisitions and expansion moves, Frederique Constant launched its first ManufactureManufactureA watchmaking term for a company that designs and produces most of its movements and components in-house, rather than relying on outside suppliers. Being a true manufacture signals deep expertise,Go to Manufacture Glossary caliber, which was developed and assembled in-house. They no longer had to rely on another party; they could do it themselves. This meant more control and a faster production timeline. The designer creates the exterior look of the watch, while the engineer crafts the internal workings. Meticulously partnering together, these geniuses bring an idea to life, from sketches to prototypes, to reality.
In 2023, Frederique Constant debuted at Watches and Wonders, the best international fine watchmaking exhibition. This also marked the release of the Maison’s 31st in-house movementIn-House MovementA watch movement designed, developed, and manufactured by the same brand that produces the watch, rather than purchased from an outside supplier. In-house movements indicate technical independence and craftsmanship, andGo to In-House Movement Glossary. It’s been quite busy, and part of this busyness has brought another collaboration. In 2024, another Peter entered the horology team—this time Peter Speake, previously of the watch brand Speake-Marin. The British watchmaker brought a different approach to the Maison, and together they created the Frederique Constant Slimline Perpetual Calendar (FC-775PS4S6).
There is a lot to unpack here. Watches, as with fashion, go through seasons and sometimes revisit concepts. In the case of horology, a watch’s silhouette on the wrist is sometimes a decision point for the wearer. If you want something that will catch the eye, then a thicker watch with extra functions might be what you want. If you want something that sits sleek on the wrist, then a thinner watch might be just what you need.
The Slimline Perpetual Calendar actually checks the boxes for several criteria. The stainless steel case is quite slim. Though it measures 42 mm in diameter, it comes in just a shade over 12 mm in thickness. A perpetual calendar watch can automatically display several functions—the usual hours and minutes, plus the date, month, and even the moon phase and the leap year. Yes, all of this information is housed in a mere 12 mm, without needing manual adjustment.
How is that possible? Peter Speake designed this watch with an openwork or skeletonized structure, meaning all non-essential surfaces have been removed. Looking at the dial, or where the dial would traditionally be, you see the subdials for the day, date, and month. Even the hands have been openworked, and this gives a cleaner look to the whole dial. The color palette is predominantly black and white, a nice match to the matte grey dial. There are touches of blue and hints of red for the day, date, and month indicators. Look a little closer and you’ll see the moon phaseMoon PhaseA watch complication that displays the current phase of the moon through a small aperture on the dial, usually accurate to within a day for years. Romantic, the moon phaseGo to Moon Phase Glossary and the leap year parts too.
Powering all of these functions is the caliber FC-775 automatic movementAutomatic MovementA mechanical watch movement powered by a rotor that winds the mainspring through the natural motion of the wearer's wrist, removing the need for a battery. Prized by collectors forGo to Automatic Movement Glossary, which has 26 jewels, 28’800 alt/h vibrations per hour, and a 38-hour power reserve. The stainless steel case has a black nylon strap with a folding buckle. The watch comes with a document that certifies it as a limited edition: just one of 135. As a final flourish, the watch is housed in a finely crafted Frederique Constant wooden presentation box—an embodiment of the brand’s commitment to detail and distinction.
This article originally appeared in Robb Report Philippines’ Watches and Jewelry Issue, August 2025.