Strap for Oris BC4 01 674 7616 4154

The Oris BC4 01 674 7616 4154 features a 22mm lug width. This measurement represents the internal distance between the two spring bar lugs. You can verify this by measuring the metal axle on which the strap is attached. All straps with 22mm lug width are compatible with this model.

For an aviation tool watch like the BC4 01 674 7616 4154, we recommend either a NATO Premium in robust polyamide or calf leather with vegetable tanning. The NATO offers maximum practicality and quick-change capability; calf leather ensures daily elegance and develops authentic patina over time. For formal environments, brunished alligator represents the highest aesthetic compatibility whilst maintaining the watch's technical character.

The 22mm strap is changed easily by removing the two spring bar pins located at the strap extremities. Using a spring bar tool, compress the internal spring of the pin to release the old strap, then insert the pins into the new strap ensuring they sit fully within the slots. The procedure takes less than two minutes and is completely reversible.

Any strap with a 22mm lug width is compatible with the BC4. We recommend straps crafted by specialised artisans guaranteeing quality materials: vegetable-tanned calf, tessellated NATO, FKM rubber, and alligator leather. Avoid straps with lug widths other than precisely 22mm to ensure perfect seating within the spring bar slots.

A calf leather strap with vegetable tanning, if subjected to moderate daily use and regular maintenance (cleaning with damp cloth, air drying), maintains structural integrity for 3-4 years. Lifespan depends on climate (humidity accelerates wear), sun exposure (damages pigmentation), and frequency of wear. A tessellated NATO strap exceeds 5 years of service. The patina that develops is testimony to robustness, not degradation.