Doxa SUB 300T

    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. 840.10.241.25, 840.10.241.10 and 14 more

    42 to 42.5 mm cases

    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.

    Collection25 references
    20 mm
    Illustration drawn to scale: 42.5 mm case, 20 mm lugs

    Lug widths across the line

    The Doxa SUB 300T takes a 20 mm strap: all 25 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

    25 Doxa SUB 300T references

    Doxa SUB 300T 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 300T Searambler

      SUB 300T Sub

      20 mm

      Database

      42.5 mmSilver dialStainless steel

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

    • Sub 300T Sharkhunter

      SUB 300T Sub

      20 mm

      Database

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

    • Sub 300T Whitepearl

      SUB 300T Sub

      20 mm

      Database

      42.5 mmWhite dialStainless steel

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

    • Sub 300T Aquamarine

      SUB 300T Sub

      20 mm

      Database

      42.5 mmTurquoise dialStainless steel

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

    • Sub 300T Caribbean

      SUB 300T Sub

      20 mm

      Database

      42.5 mmNavy dialStainless steel

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

    • Sub 300T Professional

      SUB 300T Sub

      20 mm

      Database

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

    • Sub 300T Divingstar

      SUB 300T Sub

      20 mm

      Database

      42.5 mmYellow dialStainless steel

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

    • 840.10.241.25

      SUB 300T Aquamarine (Rubber)

      20 mm

      Maker

      42.5 mmTurquoise dialStainless steel

      Attachment
      classic lugs
      Status
      Listed by the maker

    • 840.10.241.10

      SUB 300T Aquamarine (Stainless Steel)

      20 mm

      Maker

      42.5 mmTurquoise dialStainless steel

      Attachment
      classic lugs
      Status
      Listed by the maker

    • 840.10.201.32

      SUB 300T Caribbean (Rubber)

      20 mm

      Maker

      42.5 mmNavy dialStainless steel

      Attachment
      classic lugs
      Status
      Listed by the maker

    • 840.10.201.10

      SUB 300T Caribbean (Stainless Steel)

      20 mm

      Maker

      42.5 mmNavy dialStainless steel

      Attachment
      classic lugs
      Status
      Listed by the maker

    • 840.10.101C

      SUB 300T COSC Black

      20 mm

      Database

      42 mmBlack dialSteel

      Attachment
      classic lugs
      Style
      diver
      Movement
      Automatic COSC
      Caseback
      Solid back
      Production
      2021, present
      Status
      Listed in our database, not yet verified

    • 840.10.351C

      SUB 300T COSC Professional

      20 mm

      Database

      42 mmOrange dialSteel

      Attachment
      classic lugs
      Style
      diver
      Movement
      Automatic COSC
      Caseback
      Solid back
      Production
      2021, present
      Status
      Listed in our database, not yet verified

    • 840.10.361.31

      SUB 300T Divingstar (Rubber)

      20 mm

      Maker

      42.5 mmYellow dialStainless steel

      Attachment
      classic lugs
      Status
      Listed by the maker

    • 840.10.361.10

      SUB 300T Divingstar (Stainless Steel)

      20 mm

      Maker

      42.5 mmYellow dialStainless steel

      Attachment
      classic lugs
      Status
      Listed by the maker

    • 840.10.351.21

      SUB 300T Professional (Rubber)

      20 mm

      Maker

      42.5 mmOrange dialStainless steel

      Attachment
      classic lugs
      Status
      Listed by the maker

    • 840.10.351.10

      SUB 300T Professional (Stainless Steel)

      20 mm

      Maker

      42.5 mmOrange dialStainless steel

      Attachment
      classic lugs
      Status
      Listed by the maker

    • 840.10.131.26‑N

      SUB 300T Sea Emerald (NATO)

      20 mm

      Maker

      42.5 mmGreen dialStainless steel

      Attachment
      classic lugs
      Status
      Listed by the maker

    • 840.10.131.10

      SUB 300T Sea Emerald (Stainless Steel)

      20 mm

      Maker

      42.5 mmGreen dialStainless steel

      Attachment
      classic lugs
      Status
      Listed by the maker

    • 840.10.021.20

      SUB 300T Searambler (Rubber)

      20 mm

      Maker

      42.5 mmSilver dialStainless steel

      Attachment
      classic lugs
      Status
      Listed by the maker

    • 840.10.021.10

      SUB 300T Searambler (Stainless Steel)

      20 mm

      Maker

      42.5 mmSilver dialStainless steel

      Attachment
      classic lugs
      Status
      Listed by the maker

    • 840.10.101.20

      SUB 300T Sharkhunter (Rubber)

      20 mm

      Maker

      42.5 mmBlack dialStainless steel

      Attachment
      classic lugs
      Status
      Listed by the maker

    • 840.10.101.10

      SUB 300T Sharkhunter (Stainless Steel)

      20 mm

      Maker

      42.5 mmBlack dialStainless steel

      Attachment
      classic lugs
      Status
      Listed by the maker

    • 840.10.011.23

      SUB 300T Whitepearl (Rubber)

      20 mm

      Maker

      42.5 mmWhite dialStainless steel

      Attachment
      classic lugs
      Status
      Listed by the maker

    • 840.10.011.10

      SUB 300T Whitepearl (Stainless Steel)

      20 mm

      Maker

      42.5 mmWhite dialStainless steel

      Attachment
      classic lugs
      Status
      Listed by the maker

    FAQ

    What lug width does the Doxa SUB 300T use?

    The Doxa SUB 300T takes a 20 mm strap: all 25 references with a listed width in our database use 20 mm. Check the reference on your case back to be sure. The Doxa SUB 300T ref. 840.10.241.25, 840.10.241.10 and 14 more take 20 mm (listed by the maker).

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

    From our database, which lists 25 Doxa SUB 300T references, 25 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.