Strap for BC3 Advanced Day Date Stainless Steel / Black / Bracelet

The lug width of the BC3 is precisely 22mm. This measurement is determined by the 42mm case geometry and represents the only correct compatibility for this model. Always verify with a calliper before ordering an aftermarket strap.

For this field watch, we suggest three options depending on use: shell cordovan with aged patina (formal wear and weekends), premium NATO in black or sand (daily and durability), FKM rubber with steel deployante (nautical and humid environments). Your choice depends on prioritising colour versatility versus material longevity.

Strap replacement requires a spring bar tool and approximately 30 seconds per lug. Position the watch on a soft surface with lugs facing upward, insert the tool into the narrow spring bar slot until it retracts, remove the old strap, position the new one and align the spring into the opposite seat. If unfamiliar with the operation, the Casati Milano atelier offers strap-change service by appointment.

Yes, any 22mm strap is compatible with all watches fitted with 22mm lugs. However, aesthetic harmony varies: the BC3, with its case-to-lug proportion, is best suited to minimalist texture straps (smooth calf, rubber), while straps with pronounced grain might appear too dominant.

A vegetable-tanned calf or shell cordovan strap, worn daily, maintains structural integrity for 3–4 years. Longevity depends on relative humidity, maintenance frequency (periodic cleaning, conditioning with natural balm every 6–8 months) and storage conditions. With proper care, patina evolves into aesthetic richness without functional compromise.