Strap for Constellation Quartz 27 Brushed White Gold / Diamond / Diamond

The lug width of the Constellation 123.55.27.60.99.001 is exactly 20mm. This dimension represents the standard for compact women's wristwatches and is easily verifiable by measuring the distance between the two case attachment holes with a digital caliper.

Alligator represents the most elegant and durable choice for a 27mm white gold Constellation. The natural grain of alligator leather pairs perfectly with the brilliance of white gold, creating a sophisticated contrast. Vegetable-tanned calf leather is the alternative for those who prefer a finer, more uniform texture, ideal for formal occasions.

To change the strap, position the watch on a stable surface with the caseback facing upward. Use a specific tool (spring bar tool) to push the pin that holds the strap in the case, applying gentle leverage to one of the two sides. Once the pin is removed, the strap will detach; proceed symmetrically from the other side. Insert the new strap and reinsert the pin until it is completely aligned.

Yes, provided the lug width is exactly 20mm. High-quality aftermarket straps, such as those made by Casati Milano, guarantee precise tolerances and fine leather materials. Always verify that the strap thickness is between 3mm and 3.5mm for perfect insertion into the case holes.

A quality leather strap made with vegetable tanning, such as those by Casati Milano, has an average lifespan of 3-5 years with moderate daily wear. Longevity depends on humidity exposure, frequency of wear, and maintenance. Alligator straps tend to last longer than calf straps, thanks to the natural structure of the scales that resist wear better.