JS Watch Co. Sif N.A.R.T.

    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

    40 mm case

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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: 40 mm case, 20 mm lugs

    Lug widths across the line

    The JS Watch Co. Sif N.A.R.T. 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 JS Watch Co. Sif N.A.R.T. references

    JS Watch Co. Sif N.A.R.T. 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.

    • Sif NART (Black dial Orange hands)

      20 mm

      Database

      40 mmBlack dial Orange handsStainless steel 316L

      Attachment
      quick-release spring bars
      Status
      Listed in our database, not yet verified

    • Sif NART (Black dial Red hands)

      20 mm

      Database

      40 mmBlack dial Red handsStainless steel 316L

      Attachment
      quick-release spring bars
      Status
      Listed in our database, not yet verified

    • Sif NART Orange Hands Black Case

      20 mm

      Database

      40 mmOrange hands Black Case dialStainless steel 316L (black case)

      Attachment
      quick-release spring bars
      Status
      Listed in our database, not yet verified

    • Sif NART Red Hands Black Case

      20 mm

      Database

      40 mmRed hands Black Case dialStainless steel 316L (black case)

      Attachment
      quick-release spring bars
      Status
      Listed in our database, not yet verified

    FAQ

    What lug width does the JS Watch Co. Sif N.A.R.T. use?

    The JS Watch Co. Sif N.A.R.T. 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 JS Watch Co. Sif N.A.R.T. lug widths come from?

    From our database, which lists 4 JS Watch Co. Sif N.A.R.T. 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 JS Watch Co. collections

    All JS Watch Co. 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.