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Oris · Big Crown

Strap for Oris Big Crown 01 644 7635 4284-Set

The Big Crown Small Seconds Date Swiss Hunter Team takes 23 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

23mm
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Lug width23 mm
Case diameter46 mm
Reference01 644 7635 4284-Set
FamilyBig Crown
MovementOris caliber Oris 644 Hours, Minutes, Small seconds | Date
Year2009
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Standard spring bar · length 23 mm · Ø 1.8 mm double flange · industry standard, no brand part number

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Big Crown Small Seconds Date Swiss Hunter Team — watch

What I'm asked about the Oris Big Crown 01 644 7635 4284-Set

What strap size does the Oris Big Crown 01 644 7635 4284-Set take?

The Oris Big Crown 01 644 7635 4284-Set needs 23 mm between the lugs. It's the size I've been fitting on it for years.

Can the strap on the Oris Big Crown 01 644 7635 4284-Set be changed?

Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.

Can I put a leather strap on the Oris Big Crown 01 644 7635 4284-Set?

Yes, in 23 mm leather. On a 46 mm case a calf strap works every day; if you want something more, alligator.

Which strap do you recommend for the Oris Big Crown 01 644 7635 4284-Set?

A 23 mm calf strap, for every day. I don't keep this size ready in the catalogue: I make it to measure. If you'd rather have something built on your wrist, the Casati atelier.

For changing the strap

Classic Strap and Bracelet Removal Tooltwo-tip spring bar tool→Milano Straps Premium Swiss Standard Watch Bucklestang buckle, steel or PVD→Leather Conditioner Milano Strapsnourishes and protects the strap→Casati Milano Rectangular Epsom Leather Travel Case — Brownfor the watch and spare straps→

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.

Request an appointment →

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

The atelier's website: casatimilano.com