72Watch housesProfile details
- Design beginning
- 1988
- First collection
- 1992
- First manufacture calibre
- FC-910, 2004
- Dated group acquisition
- 2016
- FC-810 frequency
- 40 Hz
- FC-706 stated reserve
- 72 hours
- 2026 FC-719 stated reserve
- 72 hours
A beginning has more than one date
Frederique Constant’s chronology says Aletta and Peter Stas began designing their collection in 1988, with the first collection in 1992. It dates the first Heart Beat dial opening to 1994 and first manufacture calibre, FC-910, to 2004. These are different milestones, rather than interchangeable birthdays. The same maker account dates Citizen’s acquisition of the Frederique Constant Group to 2016, giving the founders’ story a succession point. The retrospective timeline supplies these events without establishing a legal incorporation date or universal invention priority.
Evidence: History
Four workshop labels turn manufacture into a process
The maker describes T0 machining for plates and bridges of its Manufacture collection, T1 movement assembly and adjustment, T2 encasing, and T3 checks of functions, water resistance and appearance. Read those labels as stages. A plate shaped to an engineering drawing is not yet a regulated mechanism; a regulated mechanism is not yet the complete watch an owner handles. Frederique Constant also describes checks of winding, rate, amplitude and reserve according to movement complexity. These are the maker’s production account, without independent results for a specimen in this chapter. The useful question is which operation a statement covers. Local machining of specified components does not by itself identify the origin of all parts, and hand assembly does not eliminate machines from earlier stages. Nour’s guide to watchmaking beyond the logo is a companion for following this sequence while keeping design, production, adjustment and verification distinct.
Evidence: Manufacture
FC-810 and FC-706: frequency is not the whole watch
The calibre list describes FC-810 with a 40 Hz oscillator and an 80-hour reserve; FC-706 is listed at 4 Hz with 72 hours. Their rates are 288,000 and 28,800 semi-oscillations an hour. One complete oscillation contains two halves: multiply hertz by two and by 3,600 to obtain that hourly figure. A second calculation reveals why frequency and endurance deserve separate columns. Assuming constant nominal frequency throughout reserve, FC-810 would complete 40 × 3,600 × 80 = 11,520,000 full cycles; FC-706 would complete 4 × 3,600 × 72 = 1,036,800. These are illustrative counts calculated from specifications, not endurance tests or counts of every component’s motion. The tenfold frequency difference does not supply a tenfold accuracy improvement. A daily rate depends on how closely the mechanism maintains its intended timebase, rather than the number of cycles listed. Nor does a cycle count alone predict wear or service life. Compare the regulating architecture and the conditions of a documented rate test separately. The list’s date headings also leave the development-to-launch sequence open: the comparison here concerns named mechanisms, not an invented chronology.
Evidence: Calibers
Monolithic: a partner belongs in the explanation
Flexous identifies Frederique Constant’s Slimline Monolithic as a watch partnership using its oscillator. This adds a participant to the movement story rather than diminishing it: a watchmaking house can bring a product into its catalogue while a specialist contributes a regulating technology. The partner’s retrospective page contains conflicting date cues, so no launch year is taken from that account. It also makes sweeping performance and market-priority claims that are not adopted here. The secure point is the named relationship. When a movement is described as manufacture, ask whether the sentence concerns overall development, the assembled calibre or one specialised component. Giving each participant its documented role produces a clearer explanation than pretending the logo is an exhaustive supplier list. It also leaves room to appreciate the result without converting the partner’s promotional superlatives into independent measurements.
Evidence: Our story
Follow the flexures, then ask what remains untested
Flexous’s architecture description labels a silicon balance mass, integrated flexures replacing the conventional hairspring function, an integrated anchor and tuning masses. These labels offer a concrete reading route through its oscillator solution. Start with the restoring function: the question is how motion returns, rather than how many familiar parts can be counted in a photograph. Then distinguish the regulating assembly from the entire watch around it. A material property asserted for a silicon component does not establish the magnetic resistance of the complete cased watch, nor does fewer parts prove an unlimited service life. The supplier’s description is primary evidence for its proposed architecture, without a patent examination or an independent durability study here. Use Nour’s escapements and regulation guide to compare the functions being combined. Preserve the difference between understanding the arrangement and proving its performance under a particular test.
Evidence: Services / Products
The 2026 Worldtimer deserves its own calibre number
The official 2026 exhibition page describes the Classic Worldtimer Manufacture with FC-719, a stated 72-hour reserve, a 40 mm case and a date-free dial. That is a current, named configuration; it should not inherit every specification or setting instruction of the earlier FC-718 by sharing the Worldtimer name. Begin a reading with what the dial invites you to compare, then seek the exact owner instructions for the reference. A cleaner display can change the reading experience without proving a new universal mechanism. The exhibition description is maker supplied and was not checked against a physical watch. Its value here is a dated contemporary example of catalogue development, with the calibre identifier kept visible. Nour’s GMT reading room helps organise questions about place and time, while the specific manual remains the authority for operating a particular world-time system.
Evidence: Frederique Constant at Watches and Wonders Geneva 2026
Owner care is part of the technical story
Frederique Constant’s care page warns that seals can wear and that impacts can affect water resistance. It advises returning crowns to their appropriate closed position and avoiding operation of chronograph pushers in water. It also gives a general four-year service recommendation. Treat this as maker guidance, rather than a diagnosis or a guaranteed interval for a particular owner’s watch. The same page uses a generic 28,800-frequency example, which cannot describe every calibre in a catalogue that also includes FC-810. This is a useful source-reading lesson: a general service page and a named technical sheet answer different questions. For actual use, match the reference to its manual and service history before transferring instructions. A sophisticated oscillator does not remove the case, seals and controls from the owner’s responsibilities. The servicing and water-resistance guides provide the broader questions to bring to that reference-specific evidence.
Evidence: Watch care
Current affiliation needs a current source
Citizen’s current watch-business page lists Frederique Constant among its group brands. Checked on 6 October 2026, the issuer’s portfolio gives the present relationship a dated documentary basis. It does not disclose every intermediate company or each individual shareholder percentage. A brand can occupy a group portfolio while the exact legal identity on a service document requires a narrower check.
Evidence: Business: Watches
A holding company is not a complete ownership map
Citizen’s European company list names Frederique Constant Holding S.A. Record it as group-company evidence, rather than a current Swiss registry extract or full share register. An old management appointment also cannot automatically name today’s manager. Keep a historical transaction, today’s issuer listing and the legal entity responsible for a document in separate lines. This makes updates easier: a new company record can refine the corporate account without rewriting an older calibre’s specifications. Exact share allocation and the complete chain of operating entities remain open.
Evidence: Group Companies
Reader exercise: compare claims without staging a test
Make a comparison sheet for two mechanisms discussed here, with columns headed identifier, regulating idea, stated frequency, stated reserve and missing evidence. Copy each identifier from its own source and keep a date beside it. Add a separate row for an imaginary accuracy claim, such as a watch gaining a certain number of seconds each day. Which document would be needed to support that claim, and under what conditions would a test have to be described? Leave that row unfilled when no result is available. Now write a short description for a reader who has never seen either watch. Explain one technical difference and one question still unanswered, using ordinary verbs rather than praise. Finally, check that your description does not turn a supplier relationship into a whole-watch guarantee, a launch date into incorporation, or a catalogue specification into a result measured on your desk. The aim is an intelligible comparison with a traceable boundary.
Original editorial observation or reading prompt.
Sources & reading
- HistoryFrederique Constant · 2026-10-06
Retrospective chronology distinguishes 1988 design activity, 1992 first collection, 2004 FC-910 and dated Alpina/Citizen transactions. This is not a corporate register or proof of unbroken legal identity. Cumulative calibre totals and current management inferred from old appointments are excluded.
- ManufactureFrederique Constant · 2026-10-06
T0/T1/T2/T3 descriptions were read. They describe the maker process, not an independent quality audit or a statement that every component in every catalogue watch is made on site.
- CalibersFrederique Constant · 2026-10-06
FC-810, FC-706 and FC-718 specifications read. FC-810 is placed under 2020 here while the history page places the public Monolithic story in 2021; no precise development-to-launch sequence is invented. Frequency and reserve are specifications, not independent accuracy tests.
- Our storyFlexous Mechanisms B.V. · 2026-10-06
Partner identifies its involvement in Frederique Constant Slimline Monolithic. A 2019 heading conflicts with later 2021 production text and maker history; no launch date derived from this page. Superlatives and universal priority claims excluded.
- Services / ProductsFlexous Mechanisms B.V. · 2026-10-06
Supplier diagrams label silicon balance mass, integrated flexures, integrated anchor and tuning masses for its oscillator solution. No patent examination, dimensions transferred to every watch, or complete-watch magnetic-resistance guarantee inferred. No supplier images reused.
- Frederique Constant at Watches and Wonders Geneva 2026Watches and Wonders Geneva; Frederique Constant supplied brand text · 2026-10-06
2026 Classic Worldtimer Manufacture is described with FC-719, 72-hour reserve, 40 mm case and date-free dial. Maker-supplied exhibition information is not a physical test, availability record or instruction manual.
- Watch careFrederique Constant · 2026-10-06
Maker generic care guidance is read and attributed. Its general 28,800 frequency paragraph does not describe every calibre, notably FC-810. Four-year service advice is a maker recommendation, not a diagnosis of an individual watch.
- Business: WatchesCitizen Watch Co., Ltd. · 2026-10-06
Current public portfolio lists Alpina and Frederique Constant. This establishes the issuer-presented group-brand relationship on the review date, not exact share percentages, all intermediate entities or a complete beneficial-owner register.
- Group CompaniesCitizen Watch Co., Ltd. · 2026-10-06
The current European list includes Frederique Constant Holding S.A. and Manufacture La Joux-Perret S.A. A group-company list is not an independently retrieved share register and does not identify every Alpina operating entity.