Strap for Avant-Garde Quartz Big Date Two Tone / White / Strap

The lug width of the Eterna Contemporary 2545.53.61.1339 is 20mm. This dimension refers to the distance between the two attachment points (spring bar holes) of the original bracelet on the case. It is a decisive measurement for compatibility with aftermarket straps.

The best strap depends on usage and season. Alligator leather with vegetable tanning offers maximum visual sophistication and evolving patina over time. Italian calf is more versatile and robust, ideal for daily wear. A quality NATO strap ensures practicality and quick changes. FKM rubber is the choice for humid or sporting environments.

Changing the strap requires a simple tool: a spring bar tool (or even a precision toothpick). Position the watch with the dial facing downward, locate the small holes at the ends of the case (where the bracelet lugs are attached), insert the tool to compress the internal springs, and slide the old strap outward. Repeat the process for the new strap. A 2-3 minute operation.

Any strap with a 20mm lug width is compatible with this Eterna model. Milano Straps offers a complete collection of 20mm straps in vegetable leather, alligator, shell cordovan, NATO, and rubber. Always verify that the strap is fitted with lugs measuring 20mm in width.

Durability depends on the material and treatment. Calf leather with vegetable tanning resists 3-5 years of daily wear before showing noticeable wear. Alligator, given its greater structural density, can last 5-8 years. Untreated (vegetable) leather tends to age visibly after 2-3 years, which is not a defect but natural patina evolution. Appropriate maintenance and rotation with other straps significantly extends lifespan.