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    Casio G-Shock lug width

    Watch line12 references

    Strap sizes

    Casio G-Shock strap sizes, reference by reference.

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

    12 Casio G-Shock references

    The story of the Casio G-Shock

    Generations and strap changes

    1. 2022
      GA-B001

      Introduced a construction where bezel and band are one integrated piece.

      Integrated bezel and band construction.

    2. 2019
      GA-2100

      An octagonal bezel inspired by the DW-5000C; at release it was the slimmest G-Shock, with a Carbon Core Guard case.

    3. 2018
      GMW-B5000 full metal

      The square design moved to stainless steel for both bezel and band.

      Stainless steel band replaced resin on this model.

    4. 2010
      GA-110

      Launched with the largest case in the lineup and a four-layer dial.

    5. 1996
      MR-G MRG-100

      The first full-metal G-Shock introduced a metal construction.

    6. 1995
      DW-6900

      The 6900 line debuted with a round face and Triple Graph display.

    7. 1987
      DW-5600C

      First watch of the long-selling 5600 line.

    8. 1983
      DW-5000C

      The original G-Shock used a hollow case with a urethane covering, built to survive a 10-meter drop.

    Firsts and innovations

    The G-Shock line introduced a 'float' structure, in which the module is suspended at a few points inside the case to absorb shocks. Nippon.com says this is still the basis of G-Shock today.

    About Casio

    Founded in 1957 in Tokyo, Japan.

    The Casio story

    FAQ

    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.