Find your watch strap size by model
Most people looking for a leather strap already know their watch but not its lug width. This chart covers common models to point you in the right direction. Always measure to confirm before ordering — manufacturers change specifications between references and production years, and a 1mm error means the strap will not fit. Our size guide shows how to measure in under a minute.
Seiko
- Seiko 5 SNK80x series (SNK809, SNK803) — 18mm
- Seiko SKX007 / SKX009 — 22mm
- Seiko 5 Sports SRPD series — 22mm
- Seiko Turtle SRP777 / SRPE series — 22mm
- Seiko Presage dress models — commonly 20mm
- Seiko Alpinist SARB017 / SPB121 — 20mm
Rolex
- Submariner (40mm and 41mm) — 20mm
- Datejust 36 — 20mm
- Datejust 41 — 21mm
- Explorer 39 — 20mm
- Oyster Perpetual 36 — 20mm
Omega
- Speedmaster Professional — 20mm
- Seamaster Diver 300M (42mm) — 20mm
- Aqua Terra 41 — 20mm
Tudor
- Black Bay 41 — 22mm
- Black Bay 58 — 20mm
- Ranger 39 — 20mm
Casio
- F-91W — 18mm
- A158 / A168 steel models — integrated bracelet, strap swap not straightforward
- Casio Duro MDV106 — 22mm
Timex
- Weekender 40mm — 20mm
- Weekender 38mm — 18mm
- Marlin 34mm — 18mm
Hamilton
- Khaki Field 38mm — 20mm
- Khaki Field 42mm — 20mm
Watches that need an adapter or will not fit
These use proprietary or integrated fittings rather than standard spring bars, so a conventional leather strap will not attach directly:
- Apple Watch — requires a purpose-made Apple Watch strap or adapter
- Garmin, Fitbit and most fitness trackers — proprietary quick-release fittings
- Tissot PRX — integrated bracelet design on most references
- Cartier Santos and similar integrated designs — brand-specific fittings
Shop by size
Once you know your lug width:
- 12mm to 24mm, every size including odd widths — Croc Print, Silver Buckle or Black Buckle
- 14mm and 16mm — Crazy Horse Full-Grain
- 18mm, 19mm, 20mm, 21mm, 22mm — Classic Cowhide or Soft Grain
- 24mm and 26mm — Full-Grain Artisan Reserve