Strap for Endless Sunrise Alcyone Blue

The Bausele Diver BESSSM1BU1 is equipped with a 22-millimetre lug width (distance between the case lugs). This technical specification is essential when purchasing a compatible strap. You can verify correct installation by inserting the strap pin into the case lugs: it should slide smoothly with minimal play, and the strap should not appear off-centre relative to the case.

The choice depends on your intended use. For authentic diving, we recommend a vegetable-tanned Tuscan leather strap, which combines noble aesthetics with natural water-repellent properties. For pure technical deployment, a black rubber strap eliminates maintenance compromises. A grey NATO strap represents the ideal compromise between visual versatility and functionality. In all cases, the 22 mm lug width must remain constant to ensure structural compatibility.

To change the strap, you will need a spring bar tool. Insert the flat end of the tool into the spring bar from the lower side of the case, applying gentle upward pressure until the bar is released. Remove the strap and repeat on the opposite side. Install the new strap (22 mm lug width) by reversing the process: position the bar in the lugs and ensure it slides smoothly until it clicks shut. Always verify that the strap is symmetrical relative to the case.

Yes, provided the strap is dimensioned for 22 mm lug width. Aftermarket straps are fully compatible with the BESSSM1BU1. MilanoStraps offers an extensive range of materials (vegetable leather, alligator, NATO, rubber), all sized for this width. We recommend verifying that the strap is made from moisture-resistant materials, given the diving nature of your timepiece.

A quality leather strap (vegetable or alligator-tanned) typically lasts 3–5 years of daily use, depending on environmental humidity and immersion frequency. Vegetable-tanned Tuscan leather tends to last longer because natural tanning renders it more moisture-resistant and develops a protective patina over time. Rubber or NATO straps have potentially unlimited lifespan, barring mechanical wear. Regular maintenance (drying and conditioning) significantly extends strap life.