Bell & Ross
Instruments BR05A-BL-ST/SST
Bell & Ross Instruments BR05A-BL-ST/SST: strap made to measure on the watch at the Casati Milano atelier, by appointment.
Technical Specifications
Bell & Ross BR05A-BL-ST/SSTBR05A-BL-ST/SST
Bell & Ross caliber BR-CAL.321 Hours, Minutes, Seconds | Date
The Heritage
The strap for this watch is made to measure
On the Bell & Ross Instruments the bracelet is drawn as part of the case: no catalogue strap will fit. In the atelier we take the measurements on the watch itself and build the strap on the piece — that is the work of Casati Milano.
Book a consultation →FAQ
Can a bespoke strap be fitted to the Bell & Ross Instruments BR05A-BL-ST/SST?
The lug attachment on the BR05A-BL-ST/SST is integrated into the case and follows a proprietary standard, so a standard off-the-shelf strap is not compatible. However, <a href="/pages/casati-booking">Casati Milano</a> constructs fully bespoke straps precisely for this model, surveying the exact specifications of the attachment and crafting the leather support to your watch's measurements. The strap becomes a perfect extension of the case.
How is the bespoke strap created for the Instruments BR05A-BL-ST/SST?
The process begins with an appointment at <a href="/pages/casati-booking">Casati Milano</a>, where the craftsman examines your watch directly and traces the constructive coordinates of the lug. You agree on leather type, finishing details, thickness and clasp system. The atelier then constructs your strap to these precise measurements, ensuring perfect fit and harmonious integration with the case geometry.
Which leather is best suited to the character of the Bell & Ross Instruments BR05A-BL-ST/SST?
The BR05A-BL-ST/SST has an austere, functional personality, so ideal choices are fine-grained leathers – calf, saffiano calf – in deep tones such as black, navy blue, charcoal grey or cognac brown. A coarse texture like heavy grain could create visual dissonance with the clean geometry of the avionic dial. Burgundy and British racing green can also work for those seeking restrained boldness.
How long does a bespoke strap from Casati Milano last?
A strap crafted by hand using quality leather, to Casati Milano standards, lasts decades with proper care. Longevity depends on use, leather type and maintenance: avoiding prolonged exposure to excess moisture, dirt and extreme conditions extends its lifespan. Over time, the leather develops a natural patina that enriches its aesthetic, telling the story of wear.
What distinguishes the BR-CAL.321 movement in the Instruments collection?
The BR-CAL.321 is Bell & Ross's proprietary in-house movement developed for the Instruments BR05A-BL-ST/SST collection: it equips the model with hours, minutes, seconds and date, delivering reliability and chronometric stability consistent with the brand's avionic heritage. It is the mechanical heart that reflects the case's philosophy of uncompromising engineering precision.