21.5 mm lug width watches
240 watch references in our database have a 21.5 mm lug width (0% of watches with a listed width, not each one verified). A 21.5 mm strap fits those with standard spring bars.
Brands with the most 21.5 mm watches
Examples of 21.5 mm watches
- Tag Heuer Aquaracer Professional 300 Blue WBP201B.BA063221.5 mm
- Tag Heuer Carrera Calibre 5 Black WBN2010.BA064021.5 mm
- Tag Heuer Formula 1 Date Blue WAZ1010 WAZ1010.BA084221.5 mm
- Citizen Promaster BN0208-54W21.5 mm
- Citizen Paradex Eco-Drive White Dial Stainless Steel Watch AT2400-05A21.5 mm
- 21.5 mm
- Blancpain Fifty Fathoms Automatique Steel 42.3mm - Black on Sail-Canvas Strap 5010-1130-B52B21.5 mm
- Frederique Constant Highlife Ladies Quartz Icy Blue FC-240LND2NH26B21.5 mm
- 21.5 mm
- Casio Casio Casio Collection SPF-40-2V21.5 mm
- Pagani Design PD-2720K21.5 mm
- 21.5 mm
Collections that mostly use 21.5 mm
- Frederique Constant Highlife Ladies Quartz16 or 21.5 mm
- TAG Heuer Aquaracer Premium13.4 to 22.4 mm
- TAG Heuer Aquaracer Professional21 or 21.5 mm
- TAG Heuer BA0842 - Formula 121.5 mm
- TAG Heuer BA0843 - Formula 121.5 mm
- TAG Heuer BA0876 - Formula 121.5 mm
- TAG Heuer Carrera Calibre20 to 22 mm
- TAG Heuer Kirium16 to 21.5 mm
- TAG Heuer Kirium TI521.5 mm
Questions
What does a 21.5 mm lug width mean?
The gap between the two lugs of the case is 21.5 mm, so the strap must be 21.5 mm wide where it meets the case.
Which brands use 21.5 mm lugs most?
Tag Heuer (208), Citizen (13), Blancpain (12), Frederique Constant (3), Casio (2), among the references in our database.
Is the buckle width the same as the lug width?
Not always. Many straps taper toward the buckle, so a strap sold as 21.5-19.5 is 21.5 mm at the lugs and narrower at the buckle. Only the lug width has to match your watch.
How common is 21.5 mm?
It ranks number 23 of 42 lug widths in our database, with 0% of watch references with a listed width.
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.