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Oris · Big Crown

Strap for Big Crown Pointer Date 40 Stainless Steel / TAP Air Portugal

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

Lug width

20mm
20 mm strapsAll Oris
Lug width20 mm
Case diameter40 mm
Reference01 754 7741 4094-07 5 20 78FC
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

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The Big Crown 01 754 7741 4094-07 5 20 78FC, seen from the bench

The Oris Big Crown Pointer Date 40 (ref. 01 754 7741 4094-07 5 20 78FC) features a 40mm stainless steel 316L case with a 20mm lug width and 11.65mm thickness. The explorer-blue dial with contrasting numerals ensures excellent readability in low light. Powered by the Oris caliber 754 (ETA 2824 base), it offers automatic winding, hours-minutes-seconds and date display with accuracy of +4/-6 seconds per day.

Frequently asked questions

What is the lug width of the Oris Big Crown 01 754 7741 4094-07 5 20 78FC?

The lug width is 20mm, a standard dimension that balances proportions on a 40mm case. Measure precisely between the lug shoulders with a digital calliper to verify compatibility with aftermarket straps.

Which strap is best suited for the Oris Big Crown 01 754 7741 4094-07 5 20 78FC?

A dark brown shell cordovan with vegetable tanning is ideal for enhancing the brushed steel case and developing patina over time. Alternatively, medium-grain Tuscan leather or alligator for those preferring luxury solutions. NATO and rubber for daily active use.

How do I change the strap on the Oris Big Crown 01 754 7741 4094-07 5 20 78FC?

Use a spring bar tool to gently lift the lug hole and release the existing strap. Insert the new 20mm strap until it clicks into place. Verify there is no play between the lug and the new strap attachment.

Can I fit aftermarket-compatible straps on this model?

Yes, the Oris Big Crown 01 754 7741 4094-07 5 20 78FC accepts 20mm aftermarket straps. MilanoStraps offers a selection of artisanal leather, NATO and FKM rubber options, all tested for compatibility and fit.

How long does a leather strap last on a daily-wear watch like this one?

A quality leather strap treated with vegetable tanning lasts 4-6 years with moderate daily wear. Longevity depends on exposure to moisture, sunlight and regular maintenance. Apply protective balms every 6-12 months to extend service life.

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