Oris · Big Crown

Strap for Big Crown Pointer Date 40 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 754 7679 4331-07 5 20 77FC
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

Straps for the Big Crown 01 754 7679 4331-07 5 20 77FC

Selected for the 20 mm lug width

All 20 mm straps →

The Big Crown 01 754 7679 4331-07 5 20 77FC, seen from the bench

The Big Crown Pointer Date 40 is a stainless steel watch with a 40mm case and 20mm lug width, featuring the automatic Oris 754 movement with date function and small seconds. Designed with a pragmatic heritage rooted in 1938 military aviation, the watch maintains oversized crown proportions for tactile operation and a legible dial with soft blue coloring. The model reference is 01 754 7679 4331-07 5 20 77FC, offering 100 meters water resistance and sapphire crystal with anti-reflective treatment, exemplifying functional design where form follows purpose.

Frequently asked questions

What is the lug width of the Oris Big Crown 01 754 7679 4331-07 5 20 77FC?

The lug width of this Big Crown is precisely 20mm. This dimension represents the standard attachment between the case lugs, a critical parameter to ensure compatibility without tolerance issues. The measurement can be verified using a digital calliper, positioned perpendicularly between the two internal lugs, excluding any surface treatments.

Which strap would you recommend for the Oris Big Crown 01 754 7679 4331-07 5 20 77FC?

The choice depends on usage and aesthetic preferences. A brandy-brown alligator enhances the dial's blue whilst maintaining coherence with the satin steel case. Shell cordovan develops a fascinating patina over time. For daily practicality and sportiness, a navy jacquard NATO references the aeronautical heritage. FKM rubber in black is ideal when humidity resistance and tactile grip are priorities.

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

Strap replacement requires a specialised tool: a quality spring bar tool or small screwdriver. Position the watch on a soft surface to protect the case, insert the tool under the pin (spring bar) holding the strap, apply lateral pressure to release the internal spring, and extract gently. Installing the new strap reverses the procedure, ensuring the spring clicks symmetrically.

Are there aftermarket straps available for the 01 754 7679 4331-07 5 20 77FC?

Yes, 20mm straps compatible with the Big Crown Oris include vegetable-tanned leather, shell cordovan, alligator with pronounced grain, jacquard woven NATO, and technical FKM rubber. Milanostraps offers collections compatible with this lug width, customisable in colour and clasp type, all ready for dispatch within standard timeframes.

What is the typical lifespan of a leather strap on an Oris Big Crown?

A quality leather strap, subjected to daily wear (5–6 days weekly), maintains structural and aesthetic integrity between 3 and 5 years. Durability varies by material: alligator with pronounced grain tends toward greater longevity; vegetable-tanned calf exhibits visible ageing but retains consistency; shell cordovan develops deep patina and requires specific maintenance. Humidity, perspiration, and prolonged sun exposure accelerate wear.

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