Strap for Big Crown Swiss Hunter Team PS Edition

The lug width of the Oris Big Crown 01 733 7649 4063-Set LS is 19 millimetres. This is a specific measurement that requires bespoke straps, as it does not fall within standard catalogue sizes (18mm, 20mm, 22mm). To verify the measurement correctly, position a calliper between the metal spring bars that attach the strap to the case, measuring the external distance.

For the Big Crown 01 733 7649 4063-Set LS, the recommended material is leather with vegetable tanning, particularly shell cordovan or vegetable-tanned calf, which reflects the watch's avionic heritage and develops patina over time. Alternatively, a NATO strap in grey or khaki canvas offers modern practicality whilst maintaining historical coherence. Vegan rubber is ideal for professional environments or outdoor activities.

The strap is changed by removing the metal spring bars using a dedicated spring bar tool or small screwdriver. Position the watch on a soft surface to prevent scratches. Gently compress the spring mechanism, remove the old strap, then insert the new one by aligning the lug holes with the spring bars. Verify the attachment by gently tugging: the strap must be secure without excessive play.

All straps with a 19-millimetre lug width are compatible with the Big Crown 01 733 7649 4063-Set LS. Milano Straps offers bespoke 19mm straps in leather (shell cordovan, alligator, vegetable-tanned calf), NATO and rubber. Each strap must be ordered in the specific 19mm size; alternative sizes (18mm or 20mm) will not fit correctly.

The lifespan of a leather strap depends on intensity of use and material quality. With daily wear, a shell cordovan or vegetable-tanned calf strap lasts between 2 and 4 years before requiring replacement due to natural wear. Continuous exposure to moisture, direct sunlight and thermal fluctuations accelerates ageing. Milano Straps uses premium leather that significantly extends longevity compared to entry-level solutions.