Oris · Big Crown

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

Takes 19 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width19 mm
Case diameter38 mm
Reference01 581 7566 4361-07 8 19 63
FamilyBig Crown
MovementOris caliber Oris 581 Hours, Minutes, Seconds, Additional 24 Hour 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

The Big Crown 01 581 7566 4361-07 8 19 63, seen from the bench

The Oris Big Crown 01 581 7566 4361-07 8 19 63 embodies Swiss aviator watchmaking philosophy from the 1940s. The 38mm stainless steel case features a protective crown with generous proportions for operation with gloved hands, high-contrast dial, and cylindrical construction with steel caseback. The Oris 581 automatic movement, developed from Sellita SW 200 and COSC-certified, beats at 28,800 vibrations per hour with 38-hour power reserve and ±5/+8 seconds per day accuracy. The dial includes a moon phase display at 12 o'clock, 24-hour hand, date, and day, with luminous hour markers. Lug width is 19mm.

Frequently asked questions

What is the lug width of the Oris Big Crown 01 581 7566 4361-07 8 19 63?

The Oris Big Crown 01 581 7566 4361-07 8 19 63 features a lug width of 19mm. This dimension is standard for medium-sized watches and ensures a secure fit with any strap that conforms to this specification. The lug depth is approximately 4mm, sufficient to accommodate practically all leather, NATO, or rubber straps without stability issues.

Which strap material is most suitable for the Oris Big Crown?

For the Big Crown, alligator leather with vegetable tanning is the most recommended material, as it enhances the classical aviator character of the timepiece. Alligator niloticus offers a flat, uniform texture that does not compete with the stainless steel case. Alternatively, Italian calf leather with vegetable tanning is excellent for softness and breathability, developing a unique natural patina. For summer comfort, a woven NATO or FKM rubber strap with satin texture maintains functionality and elegance without aesthetic compromise.

How do you change the strap on an Oris Big Crown?

Changing the strap requires a spring bar tool. Position the watch with the lugs facing upward, insert the thin tip of the tool into the lateral opening of the lug, gently lift the spring to free one end of the elastic axis, then extract the axis. Repeat on the other side. The new strap is fitted by sliding the axis into the specific slots on the lugs. It is advisable to proceed carefully to avoid scratching the case.

Can I use an aftermarket compatible strap with the Big Crown?

Yes, any strap with a 19mm lug width is compatible with the Oris Big Crown 01 581 7566 4361-07 8 19 63. Artisanal quality straps, made with premium leather or certified textiles, guarantee a secure fit and superior aesthetic finish compared to standard straps. Ensure that the thickness of the strap does not exceed 3-4mm in the part closest to the lug, to ensure comfortable wear.

What is the average lifespan of a leather strap for this watch?

A quality leather strap with vegetable tanning has an average lifespan of 2-3 years with moderate daily use. Factors such as sun exposure, humidity, and frequency of use influence deterioration. The leather gradually develops a patina and may thin progressively in the area that rests on the wrist. To prolong durability, it is recommended to alternate straps, avoid prolonged water exposure, and never leave the watch in direct sunlight. Periodic oiling with specific products nourishes the fiber and slows ageing.

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