Omega
Trésor 428.18.36.60.03.002— lug 18mm

The lug width of the Trésor 428.18.36.60.03.002 is exactly 18mm. This narrow measurement is a specific design feature of the model, intended to maintain the correct proportions between the 36mm diameter and the contact band on the wrist. To verify it, measure with a ruler the internal space between the two case lugs where the strap is inserted.

For the Trésor, aniline-dyed alligator represents the classic choice: the natural grain and prominent texture harmonize perfectly with the satin-finished case. Vegetable-tanned calfskin is an excellent alternative for those who appreciate the progressive aging of leather. For those seeking controlled audacity, burgundy shell cordovan creates a refined chromatic pairing with the blue dial.

The replacement requires a specific tool: a spring bar tool. Insert the bifurcated tip under the small metal rod (spring bar) that connects the strap to the case, apply slight upward pressure to release the spring, then slide the strap out of the lug. Repeat the operation symmetrically on the other side. To avoid scratches, position the watch case on a soft surface during the operation.

Yes, any strap with an 18mm lug width is compatible with the Trésor 428.18.36.60.03.002, provided it meets the construction specifications. The 18mm straps offered by Milano Straps for this measurement have been tested on this model and guarantee optimal fit, both in width and length.

The durability depends on the material and tanning method. An aniline-dyed alligator with natural tanning typically lasts 3-5 years with daily use, before requiring replacement due to wear at the articulation point. Vegetable-tanned calfskin tends to last slightly longer, thanks to fiber density. Straps made with artisanal quality, such as those by Casati Milano, are constructed with internal reinforcements that extend the service life by 1-2 years compared to serial models.