Oris · BC3

Strap for BC3 Air Racing Edition III

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 4794-Set
FamilyBC3
MovementOris caliber Oris 735 Hours, Minutes, Seconds | Date, Day
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 4794-Set

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The BC3 01 735 7641 4794-Set, seen from the bench

The Oris BC3 reference 01 735 7641 4794-Set is powered by the Oris 735 automatic calibre with hours, minutes, seconds, date and day indications. The movement offers essential daily-use functions with a self-winding perpetual system. The watch features 22mm lugs for the strap.

Frequently asked questions

What is the lug width of the Oris BC3 01 735 7641 4794-Set?

The Oris BC3 01 735 7641 4794-Set features a lug width of 22mm. This standard measurement allows compatibility with readily available aftermarket straps from both artisanal and industrial manufacturers. To verify the lug width, use a digital calliper positioned on the inner shoulders of the lugs, or mark their internal perimeter on paper for precise measurement.

Which strap is best suited to the Oris BC3 01 735 7641 4794-Set?

The Oris BC3, owing to its purpose as a professional aviator's tool watch, performs best with robust, minimalist straps. A NATO strap in dense weave (military green or navy blue) emphasises tactical functionality, whilst a vegetally-tanned leather strap (alligator or cognac calf) adds daytime dynamics whilst maintaining sobriety. A cold-vulcanised rubber strap is ideal for outdoor use and water sports. Your choice should balance formality and operativity according to your intended use.

How do I change the strap on the BC3 01 735 7641 4794-Set?

Strap replacement on any watch with 22mm lugs is executed by extracting the spring bars connecting the strap to the lugs. Use a dedicated spring bar tool to gently compress the internal retaining clip of each pin, extracting it gradually and horizontally from the lug shoulder. Repeat on the opposite lug. Insert the new strap by aligning the pins with the lugs and push until the retaining clip locks. This operation requires only minutes and no specialist skill.

Is an aftermarket strap compatible with the BC3 01 735 7641 4794-Set?

Yes, any strap with a 22mm lug width is compatible with the BC3 01 735 7641 4794-Set, provided it employs standard spring bars. Artisan-crafted straps manufactured by skilled leatherworkers permit complete personalisation: choice of material (alligator, calf, NATO textile, rubber), colour, thickness, and closure type (whether deployante or traditional keeper). Compatibility is guaranteed by the construction standards of the 22mm specification.

How long does a leather strap last on a watch like the BC3 01 735 7641 4794-Set?

A high-quality strap realised in vegetally-tanned leather typically lasts 3–5 years with moderate daily wear. Longevity depends on leather type (alligator generally outlasts calf), exposure frequency to moisture and perspiration, and preventive maintenance (periodic cleaning, drying after wetting, avoiding prolonged rain exposure). With occasional wear, durability may extend to 7–10 years. Rubber exhibits similar durability but demands less maintenance; textile NATO straps may last 5–7 years under moderate wear 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.

Request an appointment →

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