Swatch
Swatch Big Bold Strap Size & Fitting
The Swatch Big Bold needs a Big Bold strap from Swatch. The strap mounts on steel pins and is shaped to the case, so ordinary straps aren't made to fit. Original straps are about 19.7mm wide where they meet the case.
| Strap fitting | Big Bold straps |
|---|---|
| Case size | 47 mm |
| Lug-to-lug | — |
| Thickness | — |
Strap styles that fit
- Brand / OEM strapMade for this exact model.
- Adapter + standard strapBuy a model-specific adapter first.
- NATO / pass-throughNo standard lugs to pass through.
- 2-piece leatherNeeds an adapter to fit.
- Rubber / FKMOEM or adapter only.
- Metal braceletModel-specific bracelet only.
▲ Swatch-specific Big Bold straps on pins; ordinary 20mm straps aren't made for this lug shape.
Fit & sizing notes for the Big Bold
- What to buy: straps made for the Big Bold, or an adapter kit for this exact model. A normal-width strap won't attach on its own. Our integrated & smartwatch strap guide explains the options.
- Adapters stick out past the case, so the watch wears longer; check the adapter's output width before buying straps for it.
Swatch keeps separate strap families for the Big Bold, the Big Bold Bioceramic and the Big Bold Chrono, so pick the one that matches your watch. Swatch's own strap finder lists them separately.
Sources & corrections
Fitting checked against: Swatch: strap finder (Big Bold strap family); Masters in Time: original Big Bold strap ASB05G104. Last checked 26 October 2026.
Spec wrong for your watch? Send us a correction with your reference number.
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