Strap for BC4 Small Second Pointer Day Stainless Steel / Black

The lug width is 22mm. This measurement represents the internal distance between the suspension pins and determines compatibility with aftermarket straps. All 22mm straps are directly installable on this model without adapters or structural modifications.

For the BC4, vegetable-tanned Tuscan leather is the most technically coherent choice: it develops organic patina over time, reflects aviator aesthetics, and maintains the robustness required of a tool watch. Alternatively, NATO straps offer versatility and durability; FKM rubber is indicated for hostile or humid environments.

Unscrew the screw-down crown counterclockwise. Using a spring bar tool, rest the strap on a flat surface and gently extract the pins from the case. Insert the new pins into the replacement strap and secure them in the case. Screw the crown down to restore water resistance.

Yes. The Oris BC4 accepts any 22mm strap of adequate build quality. Artisanal straps with vegetable tanning, alligator, or FKM rubber are fully compatible and guarantee superior finish levels compared to OEM straps.

Durability depends on use, climate, and material. A well-maintained vegetable-tanned strap lasts 3–5 years in daily contexts. Resistance increases significantly in dry climates; in humid or hostile environments, FKM rubber offers superior durability (10+ years). The organic patina of Tuscan leather is an aesthetic advantage that offsets periodic maintenance.