Oris · Big Crown

Strap for Big Crown Pointer Date 40 Stainless Steel - Rose Gold / Silver / Bracelet

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

Lug width20 mm
Case diameter40 mm
Reference01 754 7628 4361-07 8 20 78
FamilyBig Crown
MovementOris caliber Oris 754 hours, minutes, seconds | date
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 Big Crown 01 754 7628 4361-07 8 20 78

Selected for the 20 mm lug width

All 20 mm straps →

The Big Crown 01 754 7628 4361-07 8 20 78, seen from the bench

The Oris Big Crown is powered by the Oris 754 automatic calibre with hour, minute, second and date functions. The watch has 20mm lugs and the reference 01 754 7628 4361-07 8 20 78. The model is part of the brand's aviation collection.

Frequently asked questions

What is the lug width of the Oris Big Crown 01 754 7628 4361-07 8 20 78?

The lug width is 20mm. This measurement is taken by placing a calliper or ruler between the centres of the two lug terminals—the metal protrusions on either side of the case where the strap attaches. An accurate measurement is essential before ordering an aftermarket strap, as even a 1-2mm discrepancy will compromise fitment and aesthetics.

Which strap is best suited to the Oris Big Crown 01 754 7628 4361-07 8 20 78?

This depends on usage and aesthetic preference. A vegetable-tanned leather strap develops a natural patina that dialogues perfectly with the brushed stainless steel case. Shell cordovan offers decades of durability and extraordinary grain character. NATO straps in Cordura canvas ensure immediate comfort and chromatic versatility. FKM rubber is ideal for intensive sports or work activity, reducing maintenance and guaranteeing wrist security.

How do I change the strap on the Oris Big Crown 01 754 7628 4361-07 8 20 78?

The Big Crown uses a standard lug-and-spring-bar system. To change the strap: 1) position the watch with the strap facing upward, 2) use a spring bar tool to apply light pressure to the end of the spring bar, 3) retract the bar until the lug terminal is freed from the case lug, 4) repeat on the opposite side. Reverse the procedure to install the new strap. Never force: controlled pressure preserves the terminals.

Are aftermarket straps truly compatible with the Oris Big Crown 01 754 7628 4361-07 8 20 78?

Yes, provided the lug width is exactly 20mm. Spring bars are universal standard fittings. However, strap quality depends on manufacturing craftsmanship: a vegetable-tanned leather with top-stitching and well-executed passants will elevate your Big Crown. Beware of budget straps where the grain is artificial and stitching irregular. Investing in an artisanal strap means investing in the visual and tactile longevity of your timepiece.

How long does a leather strap last on the Oris Big Crown 01 754 7628 4361-07 8 20 78?

This depends on tanning method and usage patterns. A quality vegetable-tanned leather, worn regularly (5-6 days weekly), maintains structure and flexibility for 3-5 years. Factors shortening durability: constant water exposure, perspiration, direct UV. Factors extending it: rotation with other straps, periodic conditioning with fig oil or beeswax, rapid drying after moisture. Shell cordovan resists 10+ years under normal conditions thanks to its natural density and intrinsic water-repellent properties.

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