Jaeger-LeCoultre Master Ultra

    The strap size depends on the reference. Yours is engraved on the case back or between the lugs at 6 o'clock.

    20 or 21 mm

    Listed by the maker for ref. 1368430

    39 mm case · 2013 to 2022

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    Official page: Jaeger-LeCoultre

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

    Collection7 references
    21 mm
    Illustration drawn to scale: 39 mm case, 21 mm lugs

    7 Jaeger-LeCoultre Master Ultra references

    Jaeger-LeCoultre Master Ultra 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.

    • 1368470

      Master Ultra Thin Moon Black

      21 mm

      Database

      39 mm2020Black dialSteel

      Attachment
      classic lugs
      Style
      dress
      Movement
      Automatic
      Caseback
      Display back
      Production
      2020, present
      Status
      Listed in our database, not yet verified

    • 1368480

      Master Ultra Thin Moon Blue

      21 mm

      Database

      39 mm2018Blue dialSteel

      Attachment
      classic lugs
      Style
      dress
      Movement
      Automatic
      Caseback
      Sapphire back
      Production
      2018, present
      Status
      Listed in our database, not yet verified

    • 1368430

      Master Ultra Thin Moon Green

      21 mm

      Maker

      39 mm2022Green dialSteel

      Attachment
      classic lugs
      Style
      dress
      Movement
      Automatic
      Caseback
      Sapphire back
      Production
      2022, present
      Status
      Listed by the maker

    • 1368420

      Master Ultra Thin Moon Silver

      21 mm

      Database

      39 mm2015Silver dialSteel

      Attachment
      classic lugs
      Style
      dress
      Movement
      Automatic
      Caseback
      Sapphire back
      Production
      2015, present
      Status
      Listed in our database, not yet verified

    • 1303520

      Master Ultra Thin Perpetual

      20 mm

      Database

      39 mm2013Silver dialRose Gold

      Attachment
      classic lugs
      Style
      dress
      Movement
      Automatic
      Caseback
      Sapphire back
      Production
      2013, present
      Status
      Listed in our database, not yet verified

    • 1358480

      Master Ultra Thin Small Seconds Blue

      20 mm

      Database

      39 mm2020Blue dialSteel

      Attachment
      classic lugs
      Style
      dress
      Movement
      Automatic
      Caseback
      Display back
      Production
      2020, present
      Status
      Listed in our database, not yet verified

    • 1358420

      Master Ultra Thin Small Seconds White

      20 mm

      Database

      39 mm2017White dialSteel

      Attachment
      classic lugs
      Style
      dress
      Movement
      Automatic
      Caseback
      Sapphire back
      Production
      2017, present
      Status
      Listed in our database, not yet verified

    FAQ

    What lug width does the Jaeger-LeCoultre Master Ultra use?

    Jaeger-LeCoultre Master Ultra lug width: 20 or 21 mm depending on the reference. The most common is 21 mm (4 of the 7 references with a listed width in our database). Find your exact reference in the table below. The Jaeger-LeCoultre Master Ultra ref. 1368430 takes 21 mm (listed by the maker).

    Do all Jaeger-LeCoultre Master Ultra 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 Jaeger-LeCoultre Master Ultra lug widths come from?

    From our database, which lists 7 Jaeger-LeCoultre Master Ultra references, 7 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 Jaeger-LeCoultre collections

    All Jaeger-LeCoultre 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.