Oris · Big Crown

Strap for Big Crown Complication Stainless Steel - Rose Gold / Silver / Bracelet

The Big Crown Complication 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 581 7627 4361-07 8 20 78
FamilyBig Crown
MovementOris caliber Oris 581 hours, minutes, seconds, Additional 24 hours Hand (adjustable) | date, day | moonphase
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 01 581 7627 4361-07 8 20 78

Selected for the 20 mm lug width

All 20 mm straps →

The Big Crown 01 581 7627 4361-07 8 20 78, seen from the bench

The Oris Big Crown is powered by the Oris 581 automatic calibre with hour, minute, second and adjustable GMT hand indications. The movement integrates a full calendar with date and day of the week, as well as a moon phase. The reference 01 581 7627 4361-07 8 20 78 represents one of the variations of the Swiss brand's Big Crown collection.

Frequently asked questions

What is the lug width of the Oris Big Crown 01 581 7627 4361-07 8 20 78?

The lug width of this model is precisely 20 mm, an international standard allowing a broad range of compatible straps. To verify, measure with a calliper the distance between the two integrated lugs on the case: it must measure exactly 20.00 mm. Any strap with a 20 mm lug width will be compatible with your Big Crown.

Which strap should I pair with my Oris Big Crown 01 581 7627 4361-07 8 20 78?

The choice depends on intended use and personal preference. For formal elegance, we recommend a strap in alligator with vegetable tanning or shell cordovan, which amplify the aviatic sophistication of the Big Crown. For dynamic or casual wear, a NATO strap in technical canvas echoes the military-aviatic heritage of the model. A technically structured rubber strap offers practicality and water-resistance without sacrificing aesthetics. Milano Straps offers all these options for 20 mm lug width.

How do I change the strap on my Oris Big Crown 01 581 7627 4361-07 8 20 78?

The strap is connected to the case via spring bars, small metal rods that slide horizontally. Using a dedicated spring bar tool or a thin screwdriver, apply gentle pressure to the pin, creating sufficient space to remove the worn strap. Insert the new 20 mm strap in reverse: position the lug on the case and slide the pin until you hear a click lock. If uncertain, consult a professional watchmaker to prevent case damage.

Can I use an aftermarket 20 mm compatible strap on my Oris Big Crown 01 581 7627 4361-07 8 20 78?

Yes. Any quality strap with a 20 mm lug width is mechanically compatible with your Big Crown. We recommend choosing straps from specialised manufacturers, guaranteeing proper stitching, noble materials, and comfort. Milano Straps proposes a curated selection of 20 mm straps in vegetable-tanned leather, NATO, and technical rubber, designed for quality mechanical watchmaking.

How long does a leather strap last on an Oris Big Crown 01 581 7627 4361-07 8 20 78?

Durability depends on leather quality, frequency of use, and exposure to moisture and sunlight. A vegetable-tanned leather strap of superior quality, such as alligator or shell cordovan, typically lasts 3–7 years with daily wear. Vegetable tanning develops a protective natural patina over time, extending service life. Constant exposure to moisture, perspiration, and UV rays reduces longevity. A synthetic NATO strap has indefinite durability but may lose elasticity. Milano Straps offers durable straps, crafted with selected leathers and manual stitching guaranteeing structural integrity even after years.

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