Strap for BC3 Advanced Day Date Stainless Steel - DLC / Grey / Bracelet

The lug width of the BC3 01 735 7641 4361-07 8 22 03 is 22mm. This dimension is standard for many 42mm watches and provides access to a wide range of aftermarket straps. To verify the measurement, measure the space between the two lugs where the strap is attached: it must be exactly 22mm.

For an avionic tool watch like the BC3, we recommend a vegetable-tanned leather strap in tobacco brown or deep black, 1.6–2.0mm thick. This maintains the understated, functional aesthetic of the model. Alternatively, a grey anthracite nylon NATO or an FKM rubber strap offers extreme functionality. Avoid glossy leather or metallic finishes, which contrast with the watch's technical vocation.

To change the strap, you will need a spring bar tool. Place the BC3 on a soft surface, locate the spring bars beneath the lugs, gently press the pin with the tool to compress the springs, then slide the strap downward. Repeat for the other end. Install the new strap by reversing the process, ensuring the bars click fully into position.

Yes, the 22mm lug width of the BC3 01 735 7641 4361-07 8 22 03 is compatible with a wide selection of quality aftermarket straps. Milano Straps offers vegetable-tanned leather, chrome-tanned calf, NATO, and rubber straps, all in 22mm size and ready to ship. Artisan quality ensures superior longevity compared to standard factory straps.

The longevity of a leather strap depends on the tanning method, thickness, and frequency of wear. A quality vegetable-tanned strap with a thickness of 1.6–2.0mm lasts 3–5 years with daily wear. Vegetable tanning develops natural patina over time, improving appearance. With proper maintenance (periodic cleaning and conditioning), longevity may extend beyond 5 years. Rubber or NATO straps offer superior durability but less aesthetic refinement.