Skip to content

Need help choosing the right watch strap size? Whether you're shopping for a vintage watch or replacing the strap on your luxury timepiece, this guide explains everything you need to know about lug widths, strap lengths, and fit.
The lug width is the distance between the lugs (metal extensions on the watch case) where the strap is attached. This is measured in millimeters (mm) using a ruler or caliper.
Common lug widths:
Click here for Lug Width Sizing Tool - To Print and USE
Historically, many vintage watches followed an informal rule where the strap width was half the case diameter. For example, a 36mm watch often used an 18mm strap. While not universal today, it still applies to many models:
Common vintage watch lug sizes:
Omega watches are known for having a wide variety of case sizes and lug widths:
Use a soft tape measure or a string to wrap around your wrist. Then measure that string against a ruler to get your wrist circumference. This will help determine the appropriate strap length.
Watch straps come in standard lengths:
Ensure the strap allows for enough room without being overly tight or loose.
Straps are made from various materials, each with its own fit characteristics:
Make sure to use the correct size spring bars to match the lug width. These small bars secure the strap to the case and ensure a safe fit.
If you're unsure about strap sizes, consult your watch’s specifications or visit a professional watchmaker.

Discover our expert-curated library of vintage and luxury watch guides — from care tips to serial number lookups, movement references, size guides, and more. Experts Watches Complete Watch Guides Reference Center.
Detailed Overview on Watch Movements That Changed The World of Watchmaking
I hope you enjoy all the blogs we have, for the brief history of vintage diving watches Click Here!
Check our Watch Collection For the Latest in Vintage & Luxury Watches.
If you are inserted in Selling Watch, Trading Watch, or upgrading your Watch. Please Contact US.
Could Not Ask For Better Service! Shipping was unbelievably quick! Awesomeness at its finest!
Highly Recommend!! I'm over satisfied! ExpertsWatches is awesome! So legit!
Very professional! Holy Crap that was fast!👍🏽🤣👍🏽
JAEGER LeCOULTRE Master Compressor Titanium Diving PROGeographic GMT
Read more
Read more
Read more