Oris · BC3

Strap for BC3 Advanced Day Date DLC / White / Rubber

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 4 22 05B
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 4 22 05B

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The BC3 01 735 7641 4766-07 4 22 05B, seen from the bench

The Oris BC3 01 735 7641 4766-07 4 22 05B is a 42 mm stainless steel day-date chronometer designed for civil and professional aviation. It features a white dial with applied indices, 60-minute bezel, and date/day window at 3-9 position, powered by Oris caliber 735 movement. The 22 mm lug width enables quick strap changes and optimal proportions for the case diameter.

Frequently asked questions

What is the lug width of the Oris BC3 01 735 7641 4766-07 4 22 05B?

The lug width of the BC3 is 22 mm. This measurement refers to the distance between the two lugs on the case where the watch spring bars are inserted. It is the standard specification for Oris's 42 mm day-date model.

Which strap is best for the Oris BC3?

It depends on your intended use. For aviation or tactical environments, a NATO in recycled nylon offers durability and practicality. For everyday elegance, alligator leather or vegetable-tanned calf leather is ideal. For aquatic or humid conditions, rubber is the most technically appropriate choice. All are compatible with the 22 mm lug width.

How do I change the BC3 strap without damaging the case?

Remove the spring bars from the original strap using a fine-tipped screwdriver, working gently on the sides of the lugs. Insert the spring bars into the new strap, aligning them perfectly with the lug holes. Push until you feel the locking click. Avoid hammering the spring bars, which risks scratching the satin-brushed steel.

Is an aftermarket strap compatible with the 42 mm Oris BC3?

Yes, provided the lug width is 22 mm. Always verify the measurement before purchase. Milano Straps offers a variety of 22 mm straps in leather, NATO and rubber, tested for compatibility and build quality on Oris instruments in this category.

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

A quality leather with vegetable tanning, worn under normal conditions, lasts 3–5 years. Durability depends on sun exposure, humidity and frequency of use. Rubber and NATO straps last longer (5–10 years) as they do not degrade like biological leather.

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