Tudor Black Bay One 39 S&G

    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. M79673‑0006 and M79673‑0005

    39 mm case

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    Official page: Tudor

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

    Collection3 references
    21 mm
    Illustration drawn to scale: 39 mm case, 21 mm lugs

    3 Tudor Black Bay One 39 S&G references

    Tudor Black Bay One 39 S&G 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.

    • M79673‑0007

      Black Bay One 39 S&G

      20 mm

      Database

      39 mmYellow dialTwo-Tone Steel & 18K Yellow Gold

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

    • M79673‑0006

      Black Bay One 39 S&G

      21 mm

      Maker

      39 mmSilver with diamond hour markers dialSteel

      Attachment
      classic lugs
      Status
      Listed by the maker

    • M79673‑0005

      Black Bay One 39 S&G

      21 mm

      Maker

      39 mmBlack with diamond hour markers dialSteel

      Attachment
      classic lugs
      Status
      Listed by the maker

    FAQ

    What lug width does the Tudor Black Bay One 39 S&G use?

    Tudor Black Bay One 39 S&G lug width: 20 or 21 mm depending on the reference. The most common is 21 mm (2 of the 3 references with a listed width in our database). Find your exact reference in the table below. The Tudor Black Bay One 39 S&G ref. M79673-0006 and M79673-0005 take 21 mm (listed by the maker).

    Do all Tudor Black Bay One 39 S&G 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 Tudor Black Bay One 39 S&G lug widths come from?

    From our database, which lists 3 Tudor Black Bay One 39 S&G 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 Tudor collections

    All Tudor 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.