Eterna
Adventure 2948.41.51.1261— lug 20mm

The Eterna Adventure 2948.41.51.1261 features an integrated lug width of 20mm, measured between the inner mounting points of the case. This dimension is specific to the Adventure line and is compatible with all standard 20mm strap solutions. Measurement must always be precise, as variations of half a millimetre affect the strap's fit to the attachment. The integrated lug is not interchangeable and represents an intentional Eterna design choice to ensure structural integrity.

Choice depends on intended use and aesthetic context. For maximum refinement, we recommend alligator straps with vegetable tanning, which develop natural patina over time. For versatile daily wear, vegetable-tanned calf in natural brown or black maintains tactile quality and ages with character. If the watch will be worn during water activities or recreational use, a technical butyl rubber strap is the correct choice, as it resists moisture and salt contact without degradation.

The strap is removed using a precision tool (strap removal tool or small flathead screwdriver) to extract the spring bars that connect the integrated strap to the case. We do not recommend attempting this operation without proper tools, as uncontrolled force could damage the case or attachment points. If inexperienced, we advise consulting a qualified watchmaker or the Casati Milano atelier by appointment, where replacement is performed with professional methodology and final quality verification.

Yes, all straps in 20mm lug width are compatible with the 2948.41.51.1261, provided the construction quality is adequate. We recommend selecting straps produced by specialised artisans, as they guarantee precise tolerances, stable materials and craftsmanship that respects the case architecture. Avoid inferior-quality straps that may show buckling, accelerated deterioration or imprecise fit to the lug.

The durability of a leather strap depends on tanning method, construction quality and use. A high-quality artisanal alligator or vegetable-tanned calf strap, worn daily, has an average lifespan of 3–5 years before replacement. If the watch is worn sporadically, lifespan extends to 5–7 years. Water resistance is limited: brief accidental immersion causes no permanent damage, but prolonged immersion accelerates leather deterioration. Store the strap in a dry environment, avoid prolonged direct sunlight exposure, and occasionally apply strap-specific conditioner to significantly extend service life.