Bell & Ross · BR-03

Strap for BR 03 94 Heritage

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter42 mm
ReferenceBR0394HERITAGE
FamilyBR-03
MovementBell & Ross caliber BR-CAL.301 hours, minutes, small seconds | date | Chronograph
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the BR-03 BR0394HERITAGE

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The BR-03 BR0394HERITAGE, seen from the bench

The Bell & Ross BR-03 94 Heritage features a 42mm stainless steel square case housing the automatic BR-CAL.301 calibre with integrated chronograph, date window, and small seconds subdial. The 20mm lug width is precisely engineered to support the approximately 85-gram case weight without creating proportionally oversized strap attachments. This aviation-inspired model maintains the functional geometry inherited from military cockpit instruments.

Frequently asked questions

What is the exact lug width of the Bell & Ross BR-03 BR0394HERITAGE?

The lug width of the BR-03 BR0394HERITAGE is 20mm, measured from the inner distance between one lug and the other where the strap sits on the case. This width is standard across the entire BR-03 family and is critical for compatibility: narrower or wider straps will not fit correctly into the lugs.

Which strap material is best suited for the Bell & Ross BR-03 Heritage?

Alligator in vegetable tanning is the most authoritative choice for the BR-03 Heritage, as it reflects the avionic aesthetic with natural patina and durability. Calf leather offers softness and visual compactness. Shell cordovan delivers legendary resilience and natural thickness. Military NATO straps reference the design's operational lineage. Your choice depends on intended use and desired aesthetics.

How do you change the strap on a Bell & Ross BR-03 BR0394HERITAGE?

The BR-03 uses standard removable lugs. Use a spring bar tool to gently compress the internal metal knob of the lug and slide the strap out of the spring. Position the new 20mm strap onto the spring bar, ensuring the passages align correctly, then release the tool. Do not force: the strap should enter smoothly.

Can I use an aftermarket strap on a Bell & Ross BR-03 BR0394HERITAGE?

Yes, absolutely. Artisanal straps from specialised suppliers are perfectly compatible with the 20mm lug width of the BR-03. We recommend choosing suppliers who understand precise tolerances and construction quality appropriate to the timepiece. Milano Straps offers tested and guaranteed straps.

How long does a leather strap last on a Bell & Ross BR-03?

The lifespan of a leather strap depends on the material and usage. A vegetable-tanned alligator strap in good condition lasts 3 to 5 years with regular wear; calf leather tends to age more quickly (2-3 years). Shell cordovan is more resilient (5+ years). Constant exposure to moisture, perspiration, and UV rays accelerates deterioration. Rotating multiple straps extends the life of each.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only