Strap for Big Crown Timer Grey / Black

The lug width (also called ansa width) of the Oris Big Crown 01 735 7660 4264-07 5 22 75 is 22 millimetres. This measurement represents the distance between the two metal lugs on the watch case where the strap attaches. Always verify this dimension before purchasing an aftermarket strap to ensure perfect compatibility and a snug fit without lateral play.

The optimal strap choice depends on intended use and aesthetic preference. For authentic vintage-sport character, we recommend an alligator leather strap in traditional Florentine vegetable tanning, colour testa di moro (dark brown), which develops a rich patina over time. For formal versatility, black calf leather is unmatched. For maximum practicality and water resistance, a cotton-polyester NATO or structured rubber diving strap are ideal alternatives.

To change the strap, you will need a spring bar tool or a small flathead screwdriver. Position the watch with the strap facing upward, locate the small metal pins (spring bars) that connect the strap to the case lugs, and gently compress each spring bar to extract the old strap. Insert the new strap into the same position, ensuring both spring bars click securely into place.

Yes, any strap with a 22-millimetre lug width is fully compatible with the Oris Big Crown 01 735 7660 4264-07 5 22 75. Milano Straps provides an extensive range of artisanal 22mm straps—leather, alligator, shell cordovan, NATO, and rubber—all tested for mechanical and aesthetic compatibility with this specific model.

A quality leather strap typically lasts between 3 and 7 years depending on intensity of use, UV exposure, and ambient humidity. An alligator or calf leather strap with vegetable tanning, worn with moderate regularity and given periodic maintenance (gentle cleaning, proper drying), can exceed 7 years of service. Natural leather wear—softening and patina development—is a desired process that adds character to the piece.