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Frederique Constant Slimline 28mm Ladies Watch
Ref. FC-235M1S6
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Stepping up in the same colour and case shape
The Slimline sits at the quieter end of Frederique Constant's range — a dress watch in the strictest sense, designed to disappear beneath a cuff and read cleanly when the sleeve pulls back. At 5mm thick and weighing 20 grams on the wrist, it makes almost no physical claim on the wearer. The guilloché centre gives the silver dial enough texture to catch light without calling attention to itself, and the Roman numerals keep the whole thing legible without looking busy. The small seconds at six sits neatly within that composition. On a black leather strap with a pin buckle, it sits flat and stays there.
- Reference
- FC-235M1S6
- Brand
- Frederique Constant
- Collection
- Slimline
- Case size
- 28.6mm
- Case thickness
- 5mm
- Lug width
- 14mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- Silver
- Crystal
- Sapphire
- Movement
- Quartz
- Calibre
- FC-235
- Functions
- Small seconds
- Water resistance
- 30m
- Bracelet / strap
- Leather strap
- Strap colour
- Black
- Clasp
- Buckle
- Lume
- Luminous
- Condition
- Ex-display
- Retailer
- Goldsmiths
Additional specifications
- Origin
- Swiss made
Learn more about Frederique Constant
Peter Stas and Aletta Bax, a Dutch couple, founded Frederique Constant in 1988 with a straightforward objective: make Swiss watches with genuine watchmaking content at prices well below where that content normally starts. The name combines those of two ancestors, Frédérique Schreiner and Constant Stas, the latter a manufacturer of watch dials from the 1900s.
The company designed its own movement, the FC-910 Heart Beat, in 1994 — an aperture cut into the dial to expose the balance wheel, which became the brand's signature and is now widely copied. It began manufacturing calibres in-house in 2004, an unusual step at its price point, and has since produced over thirty in-house movements including perpetual calendars, tourbillons, and a monolithic silicon oscillator replacing the traditional escapement entirely.
That last development, the Slimline Monolithic of 2021, was a serious technical achievement: a single silicon component oscillating at 40 Hz, delivering high-frequency regulation without lubrication.
Frederique Constant also produced one of the first Swiss-made connected watches, the Horological Smartwatch, with analogue hands and hidden activity tracking.
The company built a manufacture in Plan-les-Ouates near Geneva, shares it with Alpina, and was acquired by Citizen in 2016. It also owns the vintage-focused Ateliers deMonaco.
- 1988
- Peter Stas and Aletta Bax found the company.
- 1994
- The Heart Beat dial aperture becomes the house signature.
- 2004
- In-house movement manufacturing begins.
- 2016
- Acquired by Citizen.
- 2021
- The Slimline Monolithic introduces a silicon oscillator.
Also in 6 collections
This watch appears in Stainless Steel Watches (2,953), Watches Under 37mm (1,579), Women's Watches (1,532), Leather Strap Watches (941), Silver Dial Watches (651) and Dress Watches (468).
Manufacturer’s guarantee
What the specifications mean
A slim watch on leather, made for wearing with a shirt.
Strengths
- 28.6mm wears small and slips under any cuff
- Sapphire crystal, which resists scratching
- Luminous hands and markers for low light
- Sits in the lower half of Frederique Constant's range as we list it
Worth knowing
- 30m means keeping it away from water
Compare alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | FC-235M1S6 | T1520102211600 | HGH006P1 |
|---|---|---|---|
| Price | £520 | £475 | £440 |
| Case size | 28.6mm | 28mm | 29mm |
| Water resistance | 30m | 50m | 50m |
| Movement | Quartz | Quartz | Quartz |
| Strap | Leather strap | Stainless steel bracelet | Stainless steel bracelet |
| This watch |
|
|
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
No. At 30m it will survive rain and handwashing, but not submersion of any kind.
Will the glass scratch?
Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.
Does it need a battery?
Yes. It is quartz, so expect a battery change every two to three years at a jeweller.
What size strap does it take?
14mm. Any strap of that width will fit, and on most modern watches quick-release bars make the swap a two-minute job with no tools.
Is it a men's or women's watch?
Listed as women's.
Cheapest place to buy
Goldsmiths at £520, ex-display. No UK retailer we track lists this reference new.
Is this available new?
Not from the UK retailers we track. This reference is listed as ex-display only, at £520 from Goldsmiths. Ex-display watches are unworn shop stock rather than second-hand — sold below the recommended retail price, and with the manufacturer’s guarantee intact.
Who are Goldsmiths?
Goldsmiths has been selling watches in Britain since 1778 and is part of the Watches of Switzerland Group, which is listed on the London Stock Exchange. They are an authorised dealer, so a watch comes with the manufacturer’s own warranty.
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