Strap for Big Crown Pointer Date 40 Stainless Steel / Blue / Strap

The lug width (misura ansa) of the 01 754 7741 4065-07 5 20 63 model is 20mm. This measurement indicates the distance between the inner attachment points of the lugs and corresponds to the diameter of the spring bars required for strap replacement. It is essential to verify this dimension before ordering an aftermarket strap to ensure perfect compatibility and stability within the case seat.

For the Big Crown we recommend an alligator or vegetable-tanned calf leather in cognac brown or black tones for aesthetic coherence with the watch's pilot identity. If you prefer practicality and sporty use, a woven NATO strap in sand or navy offers durability and ease of washing. For aquatic environments, FKM rubber guarantees absolute water resistance and minimal maintenance. The choice depends on primary use and context.

To replace the strap, you must remove the spring bars from the inside of the case using a dedicated tool—a spring bar tool or very thin flathead screwdriver. Push the bar inward to release the spring, extract the old strap from the lugs, then insert the new one aligning it perfectly. Reinsert the bars ensuring they click into place. If you are inexperienced, consult a watchmaker to avoid damaging the case.

Yes, absolutely. Any aftermarket strap conforming to the 20mm lug width is compatible with your Big Crown. Specialised artisanal strap makers—such as Casati Milano—offer superior quality solutions in both leather and NATO, allowing you to personalise the watch according to your aesthetic preferences and use requirements. The key is always to verify correct lug width measurement.

Durability depends on material, tanning method and use. Premium alligator with vegetable tanning offers 3-5 years of moderate daily wear before the leather begins to show significant wear. Regenerated calf has similar longevity. FKM rubber lasts 5-7 years while maintaining elasticity. To extend strap life, avoid prolonged exposure to saltwater, apply natural balms every 6 months, and rotate multiple straps to distribute wear.