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    Longines Master Collection Moonphase

    Widths differ across this line. Enter or pick your exact reference to get its width.

    18 or 21 mm

    Listed by the maker

    Attachment: spring bars

    34 to 42 mm cases

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    Official page: Longines

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

    Collection4 references
    18 mm
    Illustration drawn to scale: 34 mm case, 18 mm lugs

    4 Longines Master Collection Moonphase references

    Longines Master Collection 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.

    • L2.919.4.78.3

      Master Collection Moonphase The Longines Master Collection Moonphase

      21 mm

      Maker Spring bars

      42 mmSilver "barleycorn" dialStainless steel

      Attachment
      classic lugs
      Status
      Listed by the maker

    • L2.409.4.87.2

      Master Collection Moonphase The Longines Master Collection Moonphase

      18 mm

      Maker Spring bars

      34 mmWhite mother-of-pearl dialStainless steel

      Attachment
      classic lugs
      Status
      Listed by the maker

    • L2.409.4.78.3

      Master Collection Moonphase The Longines Master Collection Moonphase

      18 mm

      Maker Spring bars

      34 mmSilver "barleycorn" dialStainless steel

      Attachment
      classic lugs
      Status
      Listed by the maker

    • L2.409.5.87.7

      Master Collection Moonphase The Longines Master Collection Moonphase

      18 mm

      Maker Spring bars

      34 mmWhite mother-of-pearl dialStainless steel and 18 karat yellow gold cap 200

      Attachment
      classic lugs
      Status
      Listed by the maker

    FAQ

    What lug width does the Longines Master Collection Moonphase use?

    Longines Master Collection Moonphase lug width: 18 or 21 mm depending on the reference. The most common is 18 mm (3 of the 4 references with a listed width in our database). Find your exact reference in the table below. The Longines Master Collection Moonphase ref. L2.409.4.87.2, L2.409.4.78.3 and 1 more take 18 mm (listed by the maker). The Longines Master Collection Moonphase ref. L2.919.4.78.3 takes 21 mm (listed by the maker).

    Do all Longines Master Collection Moonphase references take the same strap?

    No. 2 different lug widths appear across the line, often by case size or generation. Check the reference engraved on the case back or between the lugs.

    Where do these Longines Master Collection Moonphase lug widths come from?

    From our database, which lists 4 Longines Master Collection Moonphase references, 4 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 Longines collections

    All Longines 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.