Frederique Constant Moonphase

    Every reference with a known width takes the same strap size. Your reference is engraved on the case back or between the lugs at 6 o'clock.

    18 mm

    From our database, not yet verified

    37 to 39 mm cases

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    Indicative information. Check your watch before buying a strap: whatsmylugwidth.com is not responsible for an incorrect size.

    Collection3 references
    18 mm
    Illustration drawn to scale: 39 mm case, 18 mm lugs

    Lug widths across the line

    The Frederique Constant Moonphase takes a 18 mm strap: all 3 references with a listed width in our database use 18 mm. Check the reference on your case back to be sure.

    Filter references by lug width

    3 Frederique Constant Moonphase references

    Frederique Constant Moonphase references in our database. Each card says where its width comes from: listed by the maker (linked to the maker's page in the details), two independent sources agree, or listed in our database and not yet verified by us.

    • FC‑206N3S6B

      Moonphase Moneta Moonphase

      18 mm

      Database

      37 mmBlue dialStainless steel

      Attachment
      classic lugs
      Status
      Listed in our database, not yet verified

    • FC‑206RGR3S6

      Moonphase Moneta Moonphase

      18 mm

      Database

      39 mmGreen dialStainless steel

      Attachment
      classic lugs
      Status
      Listed in our database, not yet verified

    • FC‑206RN3S6

      Moonphase Moneta Moonphase

      18 mm

      Database

      39 mmBlue dialStainless steel

      Attachment
      classic lugs
      Status
      Listed in our database, not yet verified

    FAQ

    What lug width does the Frederique Constant Moonphase use?

    The Frederique Constant Moonphase takes a 18 mm strap: all 3 references with a listed width in our database use 18 mm. Check the reference on your case back to be sure. These widths come from our database and are not yet verified.

    Where do these Frederique Constant Moonphase lug widths come from?

    From our database, which lists 3 Frederique Constant Moonphase references, 3 of them with a listed width. Each reference card says whether the maker lists the width, two independent sources agree on it, or it is not yet verified.

    Other Frederique Constant collections

    All Frederique Constant collections

    Help

    What is lug width?

    The gap between the two lugs that hold the strap, in millimetres. A new strap must match it exactly: 20 mm lugs take a 20 mm strap.

    Measure it in 30 seconds

    1. Take the strap off, or look at the back of it: many straps print their width.
    2. Measure the inside gap between the lugs with a caliper or a millimetre ruler.
    3. Round to the nearest whole millimetre. Most watches use 18, 20 or 22 mm.

    Strap, quick release or system?

    Most watches use spring bars, so any strap of the right width fits. Many smartwatches use their own band system instead, such as Apple Watch bands or Garmin QuickFit.