Oris · Big Crown

Strap for Oris Big Crown 01 735 7728 4084

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

Lug width22 mm
Case diameter45 mm
Reference01 735 7728 4084
FamilyBig Crown
MovementOris caliber Oris 735 Hours, Minutes, Seconds | Date, Day

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 01 735 7728 4084

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Big Crown 01 735 7728 4084, seen from the bench

The Oris Big Crown houses the automatic Oris 735 caliber with hour, minute, second, date and day indications. The stainless steel case measures 45mm in diameter with 22mm lugs. The model presents the essential functions for daily use in a robust and functional configuration.

Frequently asked questions

What is the exact lug width of the Oris Big Crown 01 735 7728 4084?

The lug width of the Big Crown 01 735 7728 4084 is precisely 22mm. This measurement refers to the distance between the internal attachment points of the strap to the case. To verify this with accuracy, use a digital calliper positioned perpendicularly to the spring bar lugs. A 22mm strap ensures perfect compatibility without unwanted play.

What is the best strap for the Oris Big Crown 01 735 7728 4084?

The choice depends on your intended use and aesthetic preferences. For formal elegance, we recommend alligator with vegetable tanning or shell cordovan in cognac tones. For daily practicality, a premium NATO in regenerated textile maintains the watch's aviatory identity. For wet environments or intense sports, structured FKM rubber guarantees durability and immediate reversibility.

How do I change the strap on the Big Crown 01 735 7728 4084?

Extract the spring bars using a spring bar tool, applying gentle lateral pressure to release the internal spring. Once the strap is removed, align the new strap's holes with the lugs and gently push until the spring bars click into place. Verify the strap is securely attached before wearing the watch. Avoid excessive force, which could damage the lugs.

Is an aftermarket strap from reputable brands compatible with the Big Crown 01 735 7728 4084?

Yes, provided it is manufactured for a 22mm lug width. Always verify the technical specifications from the seller before purchase. Straps crafted by specialists in aftermarket production, with precise tolerances and certified materials, offer immediate compatibility. Avoid generic products without clear construction details, as they may present dimensional variances.

How long does a leather strap last on a watch like the Big Crown 01 735 7728 4084?

A leather strap's lifespan ranges from 3 to 8 years, depending on the tanning quality, frequency of use, and exposure to moisture and perspiration. Alligator with vegetable tanning and shell cordovan tend to last longer due to their density and natural patina. Regular maintenance — gentle cleaning, protection from direct heat sources, rotation with other straps — significantly extends longevity.

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