Alexandre Meerson
D15 102-GELZ— lug 20mm

The lug width (ansa measurement) of the D15 102-GELZ is 20mm. This is the distance between the centres of the spring bar pins that attach the strap to the case lugs. To verify, position a ruler parallel to the watch diameter at the attachment point, measuring between the two holes. This precision is essential to avoid mechanical incompatibility.

Alligator leather of superior quality is the most coherent choice with the 102-GELZ's aesthetic identity. Its natural grain dialogues perfectly with the titanium texture, and the subtle patina enhances the watch's austere character. Alternatively, finest calf leather with vegetable tanning offers elegance without compromise, ageing as nobly as the titanium case.

The procedure is straightforward: with the watch face-up, locate the spring bar pins (metal cylinders passing through the lugs). Using a spring bar tool, gently compress the spring-loaded pin at one end, relieving internal tension. Remove the old strap, insert the new one by aligning the holes, and lift the pin until you hear the retention click. Repeat on the opposite side.

Absolutely, provided it is 20mm lug width. Artisanal straps from recognised manufacturers often prove superior to the original bracelet in craftsmanship and patina development. Ensure the lugs are straight (not curved) to fit perfectly against the case lugs.

A leather strap of superior quality with vegetable tanning, subjected to daily use under normal conditions, has a useful life of 4–6 years. Longevity depends on skin transpiration, direct sun exposure, and regular cleaning. Titanium does not oxidise leather, eliminating a degradation factor present in steel watches. Periodic maintenance (gentle cleaning, castor oil applied every 6 months) significantly extends lifespan.