20 mm lug width watches
10,768 watch references in our index have a 20 mm lug width (35% of watches with a confirmed width). A 20 mm strap fits those with standard spring bars.
Brands with the most 20 mm watches
Verified 20 mm watches
- Rolex GMT-Master II "Pepsi" 126710BLRO20 mm
- Omega Speedmaster Moonwatch Professional Co-Axial Master Chronometer Chronograph 42 mm 310.30.42.50.01.00120 mm
- Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 mm 210.30.42.20.01.00120 mm
- Tudor Black Bay Fifty-Eight M79030N-000120 mm
- Swatch Mission to the Moon SO33M10020 mm
- Seiko Prospex 1965 Diver's Modern Re-interpretation SPB143J120 mm
- Grand Seiko Spring Drive "Snowflake" SBGA21120 mm
- Hamilton Khaki Field Mechanical 38mm H6943993120 mm
- Citizen Promaster Automatic Diver 200m NY0040-09E20 mm
- Sinn 556 I 556.01020 mm
- Withings ScanWatch 2 42 mm20 mm
Examples of 20 mm watches
- Seiko 6105 Willard Reissue20 mm
- Seiko 1965 Diver's Modern Re-interpretation20 mm
- Seiko Age of Discovery GMT20 mm
- Citizen Attesa Black Titanium (20mm)20 mm
- Citizen Attesa Blue Titanium (20mm)20 mm
- Citizen Attesa JDM Titanium Black20 mm
- Orient FAC0A004D020 mm
- Orient FAC0A005T020 mm
- Orient FDB02004B020 mm
- Frederique Constant Classic Perpetual Calendar Manufacture Black Onyx Gold20 mm
- Frederique Constant Classic Moonphase Date Manufacture Silver Rose Gold20 mm
- Frederique Constant Classics Index Small Seconds Automatic Blue Brown Leather20 mm
- Rolex Cellini Date ref. 5051920 mm
- Rolex Cellini Dual Time ref. 5052920 mm
- Rolex Cellini Moonphase ref. 5053520 mm
- Festina Acero Clasico20 mm
- Festina acero classico (20mm)20 mm
- Festina Automatic (20mm)20 mm
- Omega Aqua Terra 231.12.42.21.01.00320 mm
- Omega Globemaster 39mm Stainless Steel Silver Leather 130.33.39.21.02.00120 mm
- Omega Constellation Globemaster Annual Calendar20 mm
- Timex Easy Reader 40mm Black20 mm
- Timex Expedition North Field Post 41 Black20 mm
- Timex M79 Automatic Arctic20 mm
Questions
What does a 20 mm lug width mean?
The gap between the two lugs of the case is 20 mm, so the strap must be 20 mm wide where it meets the case.
Which brands use 20 mm lugs most?
Seiko (1,054), Citizen (701), Orient (636), Frederique Constant (292), Rolex (260), among the references in our index.
Is the buckle width the same as the lug width?
Not always. Many straps taper toward the buckle, so a strap sold as 20-18 is 20 mm at the lugs and narrower at the buckle. Only the lug width has to match your watch.
How common is 20 mm?
It ranks number 1 of 16 lug widths in our index, with 35% of watch references.
Check before you buy
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
- Take the strap off, or look at the back of it: many straps print their width.
- Measure the inside gap between the lugs with a caliper or a millimetre ruler.
- 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.