Oris · BC3

Strap for BC3 Advanced Day Date DLC / White / Leather

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter42 mm
Reference01 735 7641 4766-07 5 22 56B
FamilyBC3
MovementOris caliber Oris 735 hours, minutes, seconds | date, day
Year2010
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 BC3 01 735 7641 4766-07 5 22 56B

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The BC3 01 735 7641 4766-07 5 22 56B, seen from the bench

The Oris BC3 01 735 7641 4766-07 5 22 56B is a 42mm stainless steel 316L tool watch rooted in Oris's 110+ year heritage in aviation and military watchmaking. It features the Oris caliber 735 automatic movement with hours, minutes, seconds, date, and day of week. The 22mm lug width balances the 42mm case proportionally and ensures broad strap compatibility. Designed for immediate legibility and tactical functionality rather than aesthetics, this instrument prioritizes contrast dial and luminescent hands for critical conditions.

Frequently asked questions

What is the lug width of the Oris BC3 01 735 7641 4766-07 5 22 56B?

The lug width is 22 millimetres. This measurement is taken vertically between the two tapered metal pins that insert into the case lugs. It is the standard width for many Oris sports models and ensures compatibility with the broad market of bespoke 22mm straps.

Which strap is best suited to the Oris BC3?

For the BC3, straps with pronounced grain and visual weight are recommended: shell cordovan with vegetable tanning creates refined contrast, alligator maintains sober elegance, high-density NATO fabric expresses British military heritage, FKM rubber is the professional choice for marine environments. Avoid glace or finely sanded leathers that would diminish the robustness of the case.

How do I change the strap on my Oris BC3?

The change is a straightforward procedure: gently depress the pin on one side of the case using a flat tool (spring bar tool), remove the old strap, insert the new strap by aligning its two holes with the pins, then push the pin into place. If uncertain, consult a watchmaker: the procedure takes approximately 5 minutes.

Can I use an aftermarket strap on this Oris model?

Yes, provided the strap is compatible with 22mm lug width. Always verify the measurement before purchase. Milanostraps offers bespoke Italian-made straps specifically designed for this width, guaranteeing construction quality and style coherent with the tool watch identity of the BC3.

How long does a natural leather strap last on a tool watch like the BC3?

Lifespan depends on usage and material choice. Vegetable-tanned leather ages naturally and patinas, lasting 5–7 years with regular maintenance. Shell cordovan resists up to 10 years. NATO fabric lasts 3–5 years. FKM rubber is the most durable (7–10 years), ideal for daily BC3 use in extreme conditions.

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.

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