Doxa SUB 300 Beta

    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.

    20 mm

    Listed by the maker for ref. 830.10.201.10

    42.5 mm case

    Find your exact reference

    Official page: Doxa

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

    Collection6 references
    20 mm
    Illustration drawn to scale: 42.5 mm case, 20 mm lugs

    Lug widths across the line

    The Doxa SUB 300 Beta takes a 20 mm strap: all 6 references with a listed width in our database use 20 mm. Check the reference on your case back to be sure.

    Filter references by lug width

    6 Doxa SUB 300 Beta references

    Doxa SUB 300 Beta 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.

    • Sub 300 Beta Aquamarine

      20 mm

      Database

      42.5 mmTurquoise dialStainless steel

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

    • Sub 300 Beta Caribbean

      20 mm

      Database

      42.5 mmNavy dialStainless steel

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

    • 830.10.201.10

      SUB 300 Beta Caribbean Steel

      20 mm

      Maker

      42.5 mmBlue dial316L stainless steel / ceramic

      Style
      diver
      Movement
      Manual Chronograph
      Caseback
      Screw steel
      Production
      1976-1980
      Status
      Listed by the maker

    • Sub 300 Beta Divingstar

      20 mm

      Database

      42.5 mmYellow dialStainless steel

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

    • Sub 300 Beta Professional

      20 mm

      Database

      42.5 mmOrange dialStainless steel

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

    • Sub 300 Beta Searambler

      20 mm

      Database

      42.5 mmSilver dialStainless steel

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

    FAQ

    What lug width does the Doxa SUB 300 Beta use?

    The Doxa SUB 300 Beta takes a 20 mm strap: all 6 references with a listed width in our database use 20 mm. Check the reference on your case back to be sure. The Doxa SUB 300 Beta ref. 830.10.201.10 takes 20 mm (listed by the maker).

    Where do these Doxa SUB 300 Beta lug widths come from?

    From our database, which lists 6 Doxa SUB 300 Beta references, 6 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 Doxa collections

    All Doxa 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.