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    Rolex Datejust lug width

    Watch line128 references

    Lug widths across the line

    20 mm is the most common lug width on the Rolex Datejust: 84 of the 98 references with a known width (86%). Other references use 21 mm, 16 mm, 17 mm, so check your exact reference.

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

    Rolex Datejust strap size through the years

    1. 202031 mm case16 mmlug width278271-MOP-RM, 278240-MNT, 278240-PUR-FLRNew strap size
    2. 201641 mm case21 mmlug width126300, 126333, 126331, 126334New strap size
    3. 198531 mm case17 mmlug width68273New strap size
    4. 195936 mm case20 mmlug width1601, 1603, 16013, 16014

    First year each case and lug width combination appears in the line, newest first.

    128 Rolex Datejust references

    The story of the Rolex Datejust

    Worn by

    Winston ChurchillHistory

    Rolex names Winston Churchill among wearers of the Datejust line. Sotheby's notes he received one as a gift from Rolex.

    Dwight D. EisenhowerHistory

    Rolex names US President Dwight D. Eisenhower as a wearer of the Datejust line.

    Martin Luther King Jr.Icon

    Rolex names Martin Luther King among wearers of the Datejust line.

    1. 1953

      Rolex added the magnifying Cyclops lens over the date in 1953, and the date change became instantaneous in 1956.

    2. 1945

      Rolex launched the Oyster Perpetual Datejust in 1945, the brand's 40th anniversary year. It shows the date in a window at 3 o'clock.

    Firsts and innovations

    Rolex states that the 1945 Datejust was the first self-winding waterproof chronometer wristwatch to show the date in a dial window.

    Rolex created the five-piece-link Jubilee bracelet in 1945 specifically for the Datejust.

    The Cyclops lens, added in 1953, magnifies the date about two and a half times.

    About Rolex

    Founded in 1905 in London, United Kingdom.

    The Rolex story

    FAQ

    What lug width does the Rolex Datejust use?

    Most references use 20 mm (86% of the 98 references with a known width). Some use 21 mm or 16 mm.

    Do all Rolex Datejust references take the same strap?

    No. 4 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.

    How does the Easylink extension work?

    Easylink sits under the clasp and lengthens or shortens the bracelet by about 5 mm. You unclip or clip back one extra link in a single move.

    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.