Oris · Big Crown

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

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 5 20 77FC
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 5 20 77FC

Selected for the 20 mm lug width

All 20 mm straps →

The Big Crown 01 581 7627 4361-07 5 20 77FC, seen from the bench

The Big Crown is a multi-function watch equipped with the Oris 581 caliber offering hours, minutes, seconds and an adjustable GMT hand. The movement includes complications for date, day of the week and moon phases. The reference 01 581 7627 4361-07 5 20 77FC represents a variant of the Oris Big Crown collection.

Frequently asked questions

What is the lug width of the Oris Big Crown 01 581 7627 4361-07 5 20 77FC?

The lug width is 20mm, the distance between the two lugs where the strap attaches. This dimension is standard for medium-sized European wrists and requires specifically 20mm straps to ensure perfect fit without gaps.

Which strap material best suits this Big Crown?

Shell cordovan with vegetable tanning is ideal to emphasise the robust character of the brushed case, developing golden patina over time. Alternatively, vegetable-tanned calf in cognac or black alligator offer aesthetic versatility. For wet environments, Cordura NATO or FKM rubber guarantee superior grip.

How do I change the strap on the Oris Big Crown 01 581 7627 4361-07 5 20 77FC?

Use a spring bar removal tool (supplied by Milano Straps) to gently push the elastic pin inward from the back of the lug. Remove the old strap, insert the new one whilst maintaining 20mm alignment, and press until the pin clicks into the new seat.

Are aftermarket straps compatible with this model?

Yes, any 20mm strap is compatible with the integrated attachment of the Big Crown. Milano Straps offers a curated selection of models in vegetable leather, NATO and technical rubber, all pre-tested for this reference.

How long does a leather strap last on a daily-worn watch?

A quality shell cordovan or vegetable-tanned calf strap can last 3-5 years with moderate daily use. Exposure to perspiration, humidity and UV rays accelerates ageing. Preventative treatment with vegetable balm every 6 months 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.

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