Louis Erard · Excellence

Strap for Excellence Le Régulateur Tourbillon Louis Erard x Alain Silberstein III Titanium / Khaki

Takes 23 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width23 mm
Case diameter40 mm
Reference9356TT06.BTT89
FamilyExcellence
MovementBCP Tourbillons caliber BCP T02 hours, minutes | tourbillon escapement
Year2023
CaseTitanium

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

The Excellence 9356TT06.BTT89, seen from the bench

The Louis Erard Excellence 9356TT06.BTT89 is a Swiss-made watch featuring a 40 mm solid titanium case with a BCP Tourbillons caliber BCP T02 movement equipped with a tourbillon escapement. The model maintains precision within ±5 seconds per 24 hours and has a 23 mm lug width for strap compatibility. This Excellence collection piece combines traditional engineering with minimalist design principles established by Louis Erard since 1975.

Frequently asked questions

What is the lug width of the Louis Erard Excellence 9356TT06.BTT89?

The lug width is exactly 23 millimetres. This dimension represents the distance between the two attachment pins on the case and determines the compatibility of any aftermarket strap. It is recommended to verify this measurement with a calliper before purchasing a replacement strap, as 23 millimetres requires specific sourcing in the secondary market.

What is the best strap for the Louis Erard Excellence 9356TT06.BTT89?

The choice depends on intended usage. For formal elegance, an alligator or vegetable-tanned calf leather in dark brown or black represents the classic solution. For daily practicality, a ballistic NATO strap guarantees versatility and quick adjustability. For sports or summer contexts, FKM rubber with satin finish offers exceptional resistance and grip. The satin-finished titanium case harmonises well with all these options.

How do you change the strap on the Louis Erard Excellence 9356TT06.BTT89?

Strap replacement requires two tools: a spring bar tool extractor and a small nylon hammer. Position the watch on a soft surface, insert the tool into the lateral gaps of the pin, press gently downward to release the internal spring, and slide the strap free. The reverse operation secures the new strap. It is advisable to have this operation performed by a specialised atelier to avoid scratching the titanium case.

Which aftermarket straps are compatible with the 9356TT06.BTT89?

Any strap with a 23-millimetre lug width is compatible. milanostraps.it offers a dedicated collection of 23mm straps in alligator, calf leather, NATO, and rubber, all ready to ship and customisable online. Each product is tested against the specifications of the Louis Erard Excellence to ensure zero lateral play.

What is the lifespan of a leather strap for the Louis Erard Excellence 9356TT06.BTT89?

A high-quality leather strap (alligator or vegetable-tanned calf) has an average lifespan of 5–7 years with moderate daily wear. Durability increases to 8–10 years if worn alternately with other straps, and reduces to 3–4 years if exposed daily to perspiration, water, or intense solar radiation. Proper maintenance with dedicated conditioners significantly extends the strap's useful life.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only