Strap for Excellence La Semaine Louis Erard x Alain Silberstein Titanium / Black

The lug width of the Louis Erard Excellence 75357TT02.BTT88 is precisely 23mm. This dimension is engineered into the 40mm titanium case geometry to provide optimal wrist conformity. It is critical to verify that replacement straps are dimensioned to exactly 23mm, as undersized 22mm straps may not seat securely on the case lugs.

We recommend alligator with vegetable tanning for formal occasions, nappa calf for comfortable daily wear, or tinted NATO for versatile sportive contexts. The satin-finished titanium case pairs particularly well with deeper tones—black, dark brown, burgundy—which amplify the visual contrast between metal and leather. Rubber straps deliver durability in humid environments without aesthetic compromise.

The strap is secured via spring bars passing through the lug apertures. Using a dedicated strap removal tool, compress the spring bar inward to release one end, then extract the strap with gentle rotational motion. Installation proceeds in reverse: align the new strap to the lug cavities, insert the spring bar, and confirm both ends are firmly seated. Avoid hammers or improvised tools that could mark the titanium case.

Yes, premium aftermarket straps are fully compatible provided the lug width is precisely 23mm. Consult our dedicated 23mm strap collection: each item is verified for both structural compatibility and aesthetic harmony with your timepiece. Always exclude undersized straps, which risk introducing play and quadrant movement.

A premium leather strap—whether alligator, calf, or vegetable-tanned—maintains structural integrity for 4–6 years of daily wear, depending on sun exposure, moisture and cleaning frequency. Sport rubber straps show degradation signs after 5–8 years. Regular care—gentle cleaning with a damp cloth, air drying, semi-annual conditioning with neutral oils—substantially extends useful life regardless of material.