Oris · Big Crown

Strap for Big Crown Small Second Pointer Day Stainless Steel / Silver

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter44 mm
Reference01 745 7629 4061-07 5 22 76FC
FamilyBig Crown
MovementOris caliber Oris 745 Hours, Minutes, Small Seconds | Date, Day
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 01 745 7629 4061-07 5 22 76FC

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Big Crown 01 745 7629 4061-07 5 22 76FC, seen from the bench

The Oris Big Crown is powered by the automatic Oris 745 caliber with indication of hours, minutes, small seconds, date and day. The case features 22mm lugs. The model maintains the characteristics of the Big Crown collection with a large crown.

Frequently asked questions

What is the lug width of the Oris Big Crown 01 745 7629 4061-07 5 22 76FC?

The lug width of this Oris model is exactly 22 millimetres. This value represents the linear distance between the two lateral lugs of the case where the strap is inserted. To verify correct measurement, use a digital calliper positioned inside the horizontal lugs. Measurement errors often arise from confusion between lug (fixed support on the case) and passant (strap segment that runs through the lug).

What is the best strap for the Oris Big Crown 01 745 7629 4061-07 5?

The ideal strap depends on predominant usage. For formal and professional occasions, we recommend alligator or calf leather subjected to vegetable tanning, in Havana or black. For recreational and sporting activities, a NATO in grey or blue ballistic fabric maintains the Big Crown's aeronautical vocation. For versatile daily use in humid climates, a vulcanised rubber strap offers the best compromise between practicality and aesthetics. All straps must feature a 22mm lug width.

How do I change the strap on the Oris Big Crown 01 745 7629 4061-07 5?

Strap change requires only a few steps. First, acquire a spring bar tool (small metal tool with two hooked ends). Position the watch on a soft, stable surface. Insert the tool's end into the small lateral slot of the lower lug to compress the elastic pin, then remove the old strap. Repeat the operation on the upper lug. Next, insert the new strap (22mm) into the lower lug's pin, then, while gently compressing the pin with the spring bar tool, secure the upper passant. Verify the strap is perfectly fastened before wearing the watch.

Are aftermarket straps compatible with the Oris Big Crown 01 745 7629 4061-07 5?

Yes, all aftermarket straps with 22mm lug width are compatible with this Oris model. Milano Straps offers a comprehensive range of 22mm straps in vegetable-tanned leather, alligator, NATO, and rubber, crafted to original construction specifications. Aftermarket straps enable aesthetic personalisation without functional compromise: ensure the strap features passants that adhere perfectly to the case to prevent slipping during daily wear.

How long does a leather strap last on a sports watch like the Big Crown?

The durability of a leather strap depends on material and usage. A calf or alligator strap subjected to vegetable tanning, worn daily on a Big Crown 44mm, maintains structural and aesthetic integrity between 3 and 6 years. Wear accelerates in humid environments, near the sea, or in swimming pools: in such contexts, it is advisable to alternate with NATO or rubber straps. Vegetable tanning naturally develops patina over time, a sign of authenticity. When the strap shows cracks or loss of elasticity, replacement is warranted. Storing the strap in a dry, ventilated location considerably extends its useful 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