Strap for BR 123 Heritage

The Bell & Ross Vintage BRV123-HERITAGE features a 20-millimetre lug width, the dimensional parameter that defines the compatibility of any third-party strap. This width must be measured internally between the two lugs where the strap attaches, excluding outer edges. A measurement error results in structural incompatibility with the strap. The acceptable tolerance is maximum ±0.5 millimetres.

Vegetable-tanned calf leather represents the optimal choice for the BRV123-HERITAGE, balancing formal elegance with the operational robustness inherent to the watch's avionic identity. Alligator is recommended for formal contexts, whilst shell cordovan guarantees unparalleled longevity thanks to its density and self-healing surface characteristics. For humid environments or sporting activities, fabric-based NATO straps are functionally unsurpassed.

Watches with integrated lugs, such as the BRV123-HERITAGE, require a specialised tool (spring bar remover) or professional watchmaker intervention. The spring bar—the elastic pin securing the strap to the lugs—must be compressed laterally to free the strap from its seat. Never attempt manual force: the risk of scratching the case or damaging the spring bar is high. The Casati Milano atelier offers this service with warranty.

Yes, any strap with a 20-millimetre lug width is compatible with the BRV123-HERITAGE, provided the internal width is rigorously respected with maximum tolerance of ±0.5 millimetres. Milano Straps are hand-crafted and customisable in leather, colour, monogramming and stitching type. The Casati Milano atelier also undertakes bespoke commissions with personal selection of materials.

The lifespan of a leather strap depends on the material and usage conditions. Vegetable-tanned calf leather typically resists 2–4 years of daily wear, developing patina over time. Shell cordovan, due to its intrinsic density, can last 5–7 years or longer. Exposure to perspiration, moisture and UV rays accelerates natural wear. A well-maintained strap (periodic cleaning, storage in a dry environment) considerably extends its longevity. The Casati Milano atelier guarantees 18 months on bespoke straps.