Swatch Watch Strap Sizes
Lug width and strap fitting for every Swatch model in our index. Tap a watch for the full guide.
Across the 1 Swatch model with standard lugs in our index, lug widths are 20mm (1). the Big Bold and the Sistem51 use an integrated or proprietary fitting, so normal straps need an adapter (how that works).
Swatch lug width chart
| Model | Reference | Strap size | Case | Lug-to-lug |
|---|---|---|---|---|
| MoonSwatch | SO33 | 20mm | 42mm | 47.3mm |
| Big Bold | SB01 / SB05 | Big Bold straps | 47mm | — |
| Sistem51 | Sistem51 (42mm) | Sistem51 straps | — | — |
Strap size = lug width. Not sure which model you have? Measure it or see the strap size chart for every brand.