Technical Archive

Louis Erard
Excellence 85358TT01.BTT83— lug 23mm

Louis Erard Excellence 85358TT01.BTT83: 23mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Excellence Le Régulateur Blanc Louis Erard x Alain Silberstein Titanium / White

Artisanal Note

"This model requires a precise 23mm lug width to preserve the original sartorial balance."

Lug Width

23 mm

The essential strap measurement.

Browse 23mm straps →

Reference

85358TT01.BTT83

Movement

Sellita caliber SW266-1 ND Hours, Minutes, Small Seconds

The Heritage

The Louis Erard Excellence 85358TT01.BTT83 is a contemporary independent Swiss watchmaker's timepiece with a 40mm titanium case. It houses the Sellita caliber SW266-1 ND movement, offering 28,800 oscillations per second and 38 hours of power reserve. The 23mm lug width accommodates a wide selection of aftermarket straps without compromise. Natural titanium develops a grayish patina over time, enhancing its technical character.

FAQ

What is the exact lug width of the Louis Erard Excellence 85358TT01.BTT83?

The lug width of the Louis Erard Excellence 85358TT01.BTT83 is 23mm. This measurement represents the distance between the two internal anchor points of the spring bars. To verify with precision, use a digital calliper to measure the spacing between the attachment holes on the case. The 23mm width ensures a broad availability of quality aftermarket straps in the market.

Which strap material is most suitable for the Louis Erard Excellence 85358TT01.BTT83?

For the Louis Erard Excellence 85358TT01.BTT83 in titanium, an alligator strap featuring vegetable tanning represents the optimal choice from both aesthetic and functional perspectives. Alligator emphasises the technical character of the case and develops a natural patina over time, parallel to the ageing of titanium. Quality alternatives include vegetable-tanned calf leather in dark shades, robust canvas NATO straps, and FKM rubber for more sporting applications.

How should one correctly change a strap on a watch with 23mm lugs?

To change the strap on a 23mm lug width watch, you must use a spring bar removal tool: a small flat-head screwdriver or a dedicated tool. Position the tool in the lateral hole of the spring, gently push inward to compress the spring, and extract the bar. Repeat on the opposite side. Insert the new strap's ends into the holes, ensure proper positioning of the springs, and verify that both sides are correctly secured with a light clicking sound.

Which aftermarket straps are compatible with the Louis Erard Excellence 85358TT01.BTT83?

All straps measuring 23mm in width are compatible with the Louis Erard Excellence 85358TT01.BTT83. This includes alligator, calf, suede, cotton NATO, nylon, rubber, and synthetic material straps. The universal compatibility of the 23mm width allows for experimenting with diverse stylistic combinations without constructive limitations. Always verify that the new strap's lugs are correctly designed to accommodate the case's spring bars.

What is the average lifespan of a vegetable-tanned leather strap on a daily-wear timepiece?

A vegetable-tanned leather strap, when worn daily on a timepiece such as the Louis Erard Excellence, has an average lifespan of 3-5 years. This estimate varies significantly based on UV exposure, humidity levels, frequency of wear, and maintenance habits. Protect the strap from prolonged direct sunlight and excessive moisture exposure. Periodic cleaning with a damp cloth and application of natural wax-based protective balms significantly extend the strap's useful life, potentially reaching 7-8 years.