Lug Width Finder — What Size Strap Fits My Watch?

Pick your watch below and get its lug width, adapter requirement and screen size instantly — then shop only straps that actually fit.

Why lug width is the only number that matters

Strap width equals the gap between your watch’s lugs, measured in millimeters. Order the wrong width and the strap either will not mount or stretches the holes trying. Everything else — material, color, style — is preference; width is physics.

When you need an adapter

Watches with integrated or proprietary mounts (the GA-2100 CasiOak and the square DW-5600 family) need a small adapter before standard straps fit — a five-minute, two-screw install. Everything else on this list takes standard spring bars.

FAQ

How do I measure lug width without tools?

A ruler across the lug gap works — the distance in mm is your strap width. Or pick your model above.

My watch is not in the list?

Use the full lug width chart — it covers every model we stock for, including dress and digital lines.

Does strap width change with a metal case kit?

It can — case kits bring their own mounting. Check the kit listing, or its build in the gallery.

Aftermarket accessories. Not affiliated with Casio, Seiko or Apple. All trademarks belong to their owners.