Strap for Excellence Le Régulateur Louis Erard x seconde/seconde/

The lug width of the Louis Erard Excellence 85237AA61.BVA31 is fixed at 22mm. This measurement refers to the internal distance between the spring bar pins, excluding the pin thickness itself. Any strap designed for 22mm lug width is fully compatible with this watch.

The optimal strap depends on usage and aesthetic preference. For ultimate elegance, alligator or vegetable-tanned leather are recommended; for daily practicality, Tropic rubber or NATO fabric offer superior functionality. The ideal thickness ranges between 3.8 and 4.2 mm to maintain proportional harmony with the 42mm case diameter.

Remove the spring bars using a dedicated spring bar tool. Place the watch on a soft pad, press the inner pin downward, and gently slide the strap out from one lug. Repeat on the opposite side. Install the new strap by reversing the procedure, ensuring both spring bars seat fully within the lugs.

Yes, certified quality aftermarket straps are entirely compatible provided they respect the 22mm lug width specification. Verify that thickness falls within 3.8–4.2 mm and that the endlinks and buckle are solidly welded and finished to prevent damage to the lugs during installation.

Lifespan varies with usage: high-quality vegetable-tanned leather straps typically last 2–4 years with moderate daily wear. Exposure to intense perspiration, humidity, or frequent rain reduces durability to 12–18 months. Alligator leather generally outlasts calf. Periodic conditioning with leather balm significantly extends longevity.