French Maison Mercier & Fils
Precision for your watch. Protection for your collection.
Founded by Bastien Jaffré, Mercier & Fils is a French house specializing in watch winders and watch safes. From two watches in a Mazarin or Rivoli to sixty slots in a Régent, we give every collection a solution to match.
Our headquarters are in Paris. After-sales service, quality checks and minor repairs are handled in France.
A French maison. An international reach.
Your collection. Wherever you call home.
Mercier & Fils specializes in international delivery of watch safes. We regularly deliver to private homes across many countries, including the United States, from the East Coast to the West Coast.
Your advisor helps you select your configuration and coordinate transportation. Delivery options and rates are tailored to your safe’s weight, destination and access requirements. Available services are shown at checkout for eligible destinations. Specialist freight arrangements are quoted before ordering.
"A watch doesn't stop on its own. It stops when you stop taking care of it."
The founding moment
It was a Sunday in November, somewhere between Rue du Faubourg Saint-Honoré and the Palais-Royal. Bastien Jaffré had just acquired his third automatic watch - a manufactured piece, complex caliber, 72-hour power reserve. He had invested in a so-called "high-end" winder, the one all the forums recommended, the one with the beautiful wooden box and the two-year warranty.
Monday morning, the watch had stopped.
No breakdown. No defect. Just a winder turning at 1,800 TPD on a caliber that only required 650. The oscillating weight had been unnecessarily stressed against its stops all night. Bastien had placed the watch on his desk, watched the winder continue to turn idly - and understood that something was fundamentally wrong with this market.
It wasn't a romantic revelation. It was an engineer's frustration.
He spent the next six months disassembling, measuring, comparing. Every available winder, from the most confidential to the best-selling, suffered from the same problem: fixed rotation programs, disconnected from the actual needs of the calibers. The market had confused the decorative object with the precision instrument. Mercier & Fils was born from this confusion - to correct it.
Bastien Jaffré - The Founder
Bastien Jaffré is not a watchmaker by academic training in the traditional sense. He is something rarer in this sector: a precision technician obsessed with the mechanics of movements, who built his knowledge from the inside out.
A Background Rooted in Precision Mechanics
Before Mercier & Fils, Bastien worked for several years in the engineering of high-stress mechanical systems – a field where a tolerance of a tenth of a millimeter is not a selling point, it's a condition of operation. This is where he developed his method: start with the component, understand its real constraints, then design the system that respects it.
Applied to watchmaking, this method provides a different interpretation of the watch winder. Bastien doesn't start with the case or aesthetics. He starts with the movement – its oscillating weight, its direction of rotation, its power reserve, its optimal TPD – and works his way up to the finished product.
The founding moment
It was a Sunday in November, somewhere between Rue du Faubourg Saint-Honoré and the Palais-Royal. Bastien Jaffré had just acquired his third automatic watch - a manufactured piece, complex caliber, 72-hour power reserve. He had invested in a so-called "high-end" winder, the one all the forums recommended, the one with the beautiful wooden box and the two-year warranty.
Monday morning, the watch had stopped.
No breakdown. No defect. Just a winder turning at 1,800 TPD on a caliber that only required 650. The oscillating weight had been unnecessarily stressed against its stops all night. Bastien had placed the watch on his desk, watched the winder continue to turn idly - and understood that something was fundamentally wrong with this market.
It wasn't a romantic revelation. It was an engineer's frustration.
He spent the next six months disassembling, measuring, comparing. Every available winder, from the most confidential to the best-selling, suffered from the same problem: fixed rotation programs, disconnected from the actual needs of the calibers. The market had confused the decorative object with the precision instrument. Mercier & Fils was born from this confusion - to correct it.
Bastien Jaffré - The Founder
Bastien Jaffré is not a watchmaker by academic training in the traditional sense. He is something rarer in this sector: a precision technician obsessed with the mechanics of movements, who built his knowledge from the inside out.
A Background Rooted in Precision Mechanics
Before Mercier & Fils, Bastien worked for several years in the engineering of high-stress mechanical systems – a field where a tolerance of a tenth of a millimeter is not a selling point, it's a condition of operation. This is where he developed his method: start with the component, understand its real constraints, then design the system that respects it.
Applied to watchmaking, this method provides a different interpretation of the watch winder. Bastien doesn't start with the case or aesthetics. He starts with the movement – its oscillating weight, its direction of rotation, its power reserve, its optimal TPD – and works his way up to the finished product.
Its winder view
For Bastien, a precision watch winder deserves the same considered approach as the watch it holds.
This conviction takes shape in TimeDrive™ M1 watch winders, powered by Coil Winding Technology, Flex Mount® watch holders and BioLock® biometric access on equipped models. It is also measured: 646.7 turns per day against a target of 650 TPD over seven days, a deviation of −0.51%, in our Rivoli 12 test.
Bastien answers technical questions by email and telephone. Personal advice accompanies the choice, configuration and use of your piece.
What "Son" means
The name Mercier & Fils carries an idea: preserving what matters and passing it on.
Continuity as a philosophy
In the French craft tradition, “& Fils” evokes the continuity of knowledge and care. For our maison, it is a commitment to thoughtful design, technical precision and personal service over time.
A collection holds more than monetary value. It carries memories, milestones and pieces chosen with care. The way we maintain and protect it should reflect that significance.
A lasting commitment
A Mercier & Fils watch winder is conceived to accompany an evolving collection. TimeDrive™ M1, powered by Coil Winding Technology, Flex Mount® holders and BioLock® access on equipped models express this approach: precision, ease of use and support over time.
“Fils” reminds us to build with what comes next in mind.
The founder
Bastien Jaffré created Mercier & Fils with a simple belief: a watch winder is not a gadget that just spins a watch. It is a precision instrument that must respect the caliber it houses.
Passionate about watchmaking, he identified a gaping hole in the watch winder market. The majority of available models, including the most renowned, operate with fixed or stepped rotation programs, disconnected from the actual needs of the calibers they are supposed to maintain. A Rolex Submariner requires approximately 650 turns per day. Entry-level models turn at 1,600 or even 1,900 TPD, with no possibility of adjustment. This is not a technical detail: it is the difference between a winder that maintains your watch and a winder that stresses it unnecessarily.
From this observation, Mercier & Fils was born. Not to add yet another watch winder to the market. But to create a French alternative that takes adjustment seriously.
Why Mercier & Fils exists
Your Rolex 3235 at 650 TPD / BOTH. Your Patek Philippe 26-330 S C at 800 TPD / CCW. Your Audemars Piguet 2385 at 800 TPD / CW. Three calibers, three programs: one Mercier winder can apply these settings independently.
These examples come from our TPD guide. Our database covers over 5,800 watch references, 86 brands and more than 200 caliber and variant designations. Our specialty: start with the movement to select its program, then match capacity and protection to your collection.
A French company based in Paris
Mercier & Fils
Mercier & Fils
60 rue François 1er
75008 Paris, France
Our Parisian head office centralizes our customer service, technical advice, and order coordination. It is from Paris that we support each client in the selection, configuration, and monitoring of their watch winder or safe.
Inspection and after-sales service in France
We handle product quality checks, after-sales service and repairs in France. Our team helps configure your watches’ TPD settings and supports your equipment throughout its use.
CE · RoHS · ISO 9001. Our range for two to sixty watches complies with CE and RoHS requirements. Our quality management system is ISO 9001 certified.
Our technical database brings together over 5,800 watch references covering 86 brands, with more than 200 caliber and variant designations.
Our Technologies
Mercier & Fils develops proprietary technologies that define our products:
Coil Winding™
Powered by Coil Winding Technology. Individually adjustable winders, designed to tailor the winding program to each automatic watch.
Precision you can measure. Our Rivoli 12 test recorded a mean deviation of −0.51% at 650 TPD over seven days; 20.1 dBA with one module and 23.4 dBA with twelve modules, measured at 30 cm (11.8 in.); and a magnetic-field variation of +1.3 µT at the watch position.
Flex Mount™
Our watch fastening system. Its telescopic cushion adjusts to all strap sizes, without additional accessories. Its extended dimension accommodates cases up to 55 mm. The mounting is designed to absorb vibrations: rotation remains fluid, and vibration does not propagate to the case.
BioLock™
Our biometric access system for safes and watch winders. Fingerprint access, no keys or combinations to remember.
Precision and protection. One shared commitment.
The care given to a movement extends to the protection of a collection. From the rotation of a watch to the construction of a safe, our approach remains the same: select technology for what it brings to the way you use your piece.
TimeDrive™ M1
Powered by Coil Winding Technology. Each winder offers individual settings to tailor its winding program to the movement it holds. Precision becomes personal.
STRATIUM™
At the heart of our safe construction, STRATIUM™ is a high-performance concrete composite, engineered to contribute to burglary and fire resistance. Protection built into the structure, beneath the exterior finish.
Protection shaped around your collection
FORT™: Reinforced Security. Our safes’ foundation of protection, with fire resistance evaluated through a 30-minute in-house test.
The Régent collection also offers VAULT™: High Level Security, certified to EN 1143-1 Grade I, and ELITE™: Advanced Security, certified to EN 1143-1 Grade III. These configurations combine certified protection with an interior composed around your watches and treasured possessions.
Collectors have their say
Our customer reviews are collected and displayed with Okendo. Explore feedback on watch winders, safes and the Mercier & Fils experience, with verified-purchase labels displayed by the platform.