Strap for Avant-Garde Quartz Big Date Two Tone / Black / Bracelet

The lug width of the Eterna Contemporary 2545.53.41.1714 is precisely 20mm. This measurement represents the distance between the two lateral lugs protruding from the case that accommodate the watch strap. To verify compatibility, measure with a digital calliper the distance between the lugs—it must be exactly 20mm. This specification is essential to ensure the strap fits without lateral play or forced insertion.

For the Contemporary 2545.53.41.1714, we recommend black or deep brown alligator for formal occasions, as it emphasises the stainless steel case geometry. Alternatively, vegetable-tanned calf leather develops an organic patina over time, endowing the timepiece with character. For casual or sporting use, cotton-polyester NATO in charcoal grey maintains chromatic balance, whilst technical rubber in blue or black provides robustness in high-stress physical environments.

Changing the strap requires a spring bar tool to remove the elastic lugs from the case lugs. Work in well-lit conditions and insert the tool's tip into the spring groove, then gently push downward until the lug end disengages from the seat. Repeat on both sides. Next, align the new strap with the case lugs and reinsert the springs, verifying they remain securely positioned. For first-time operations, we recommend consulting a professional watchmaker.

Yes, any strap with a 20mm lug width is fully compatible with the 2545.53.41.1714. Our catalogue of artisanal straps offers an extensive range in leather (alligator, calf, shell cordovan), textile fibres (NATO, cotton), and technical rubber, all certified for this specification. The lugs remain unchanged; only the external support varies, enabling aesthetic personalisation without case modifications.

Leather strap longevity depends on material quality and usage intensity. An alligator or vegetable-tanned calf strap, worn daily, develops visible patina after 6–8 months and maintains structural functionality for 3–5 years. Exposure to perspiration, moisture, and sunlight accelerates natural deterioration. Delicate leather straps (such as shell cordovan) benefit from rotation with alternative, less-exposed options. Technical rubber guarantees durability exceeding 5–7 years without significant colour variation.