Seiko Prospex Chronograph

    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

    From our database, not yet verified

    42 to 43.5 mm cases

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

    Collection4 references
    20 mm
    Illustration drawn to scale: 43 mm case, 20 mm lugs

    Lug widths across the line

    The Seiko Prospex Chronograph takes a 20 mm strap: all 4 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

    4 Seiko Prospex Chronograph references

    Seiko Prospex Chronograph 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.

    • SSC701P1

      Prospex Chronograph Prospex Solar Chronograph Diver (2019)

      20 mm

      Database

      43.5 mm

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

    • SSC019P1

      Prospex Chronograph Prospex Solar Chronograph Diver Black

      20 mm

      Database

      43 mm

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

    • SSC017P1

      Prospex Chronograph Prospex Solar Chronograph Diver Blue

      20 mm

      Database

      43 mm

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

    • SSC663P1

      Prospex Chronograph Prospex Solar Chronograph PADI

      20 mm

      Database

      42 mm

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

    FAQ

    What lug width does the Seiko Prospex Chronograph use?

    The Seiko Prospex Chronograph takes a 20 mm strap: all 4 references with a listed width in our database use 20 mm. Check the reference on your case back to be sure. These widths come from our database and are not yet verified.

    Where do these Seiko Prospex Chronograph lug widths come from?

    From our database, which lists 4 Seiko Prospex Chronograph references, 4 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 Seiko collections

    All Seiko 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.