Louis Erard
Excellence 34238AA32.BVA134— lug 20mm

The lug width (strap width) of the Louis Erard Excellence 34238AA32.BVA134 is 20mm. This is the distance between the lugs on the case where the strap attaches. It is essential to respect this exact measurement to ensure visually harmonious integration and secure strap attachment.

For the 34238AA32.BVA134, alligator leather straps are recommended for formal occasions, vegetable-tanned calf leather for elegant daily wear, natural fiber NATOs for versatility, and rubber for high-humidity activities. The choice depends on intended use and desired colour palette. Polished matte black alligator and naturally aged brown calf are particularly sophisticated pairings with the brushed steel case.

Strap replacement is achieved through the spring bars inserted in the case lugs. Using a dedicated spring bar tool, apply pressure to slightly retract the bar on one side, freeing the strap from the case. The new strap is attached by inserting the spring bar into the corresponding slots. If you do not have the tool, it is advisable to consult a professional watchmaker to avoid damaging the case finish.

Yes, it is absolutely possible to use aftermarket straps as long as they respect the 20mm lug width. High-quality artisanal straps guarantee superior durability and finish compared to generic options. It is important to verify that the strap is constructed for the exact lug width, and that the materials (leather, fabric, rubber) are of construction quality appropriate to the case level.

The durability of a leather strap depends on use, tanning method, and material quality. A high-quality artisanal alligator or calf leather strap with vegetable tanning typically lasts 3-5 years with moderate daily use. The patina that forms over time is normal and adds character; with occasional maintenance (gentle cleaning with a damp cloth), longevity can be extended. Rubber or NATO straps tend to last longer, as they do not undergo visible aging.