Oris · Big Crown

Strap for Big Crown 34 Stainless Steel / Beige / Bracelet

Takes 17 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width17 mm
Case diameter34 mm
Reference01 531 7797 4056-07 8 17 06
FamilyBig Crown
MovementOris caliber Oris 531 Hours, Minutes, Seconds
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 01 531 7797 4056-07 8 17 06, seen from the bench

The Oris Big Crown is equipped with the automatic Oris 531 caliber with hours, minutes and seconds indication. The case features 17mm lugs for the strap. The model carries the reference 01 531 7797 4056-07 8 17 06 in the Swiss manufacturer's collection.

Frequently asked questions

What is the lug width of the Oris Big Crown 01 531 7797 4056-07 8 17 06?

The lug width of this model is 17 millimetres. You can verify this by measuring the distance between the two holes on the lugs where the strap is inserted. This measurement remains consistent across all examples of the 34mm Big Crown family and is essential for ensuring correct strap compatibility.

What is the best strap for the Oris Big Crown 34mm?

It depends on usage and aesthetic preference. For formal wear, alligator in dark brown or bleu offers understated elegance. For daily robust use, vegetable-tanned calf develops patina over time. If you seek versatility, a ballistic canvas NATO allows quick changes without tools. For sport, vulcanised rubber is practical and durable.

How do you change the strap on the Oris Big Crown 01 531 7797 4056-07 8 17 06?

The strap is removable via the spring bars that anchor the lugs to the case. Using a spring bar remover tool or a thin screwdriver, gently press the pin towards the centre, releasing the opposite end from its housing. Remove the old strap and insert the new one, ensuring the pin clicks into place on both lugs.

Are aftermarket straps compatible with this Oris model?

Yes, any strap with a 17mm lug width is compatible. Milano Straps offers a curated selection of leather, NATO and rubber straps, all tested on watches in this category. Always verify the width before purchase to avoid incompatibility.

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

A high-quality leather strap (alligator, shell cordovan, calf) typically lasts 3-5 years of daily wear, depending on the tannage and intensity of use. Vegetable tanning develops visible and fascinating ageing, whilst chrome tanning tends to remain more stable. Regular replacement every 2-3 years is recommended to preserve structural integrity.

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