Eterna
Adventure 1273.41.49.1363— lug 20mm

The lug width is 20mm. This measurement is critical for compatibility and represents the distance between the two metal lugs where the strap attaches to the case. An incorrect measurement will prevent mounting and create visual imbalance on the wrist.

For this Swiss chronograph, we recommend an alligator strap with vegetable tanning for evolved elegance, full-grain calf leather in warm tones for versatile character, or a dense cotton NATO for quick changes and summer lightness. Vulcanised rubber is ideal for humid environments and water sports, offering authentic grip and durability.

Using specialist tools (a universal spring bar tool or dedicated implements), gently push the pin from right to left to remove the lugs. Once freed, thread the new strap by passing the pin through the side rings. We recommend working on a well-lit, flat surface to avoid losing the pin.

Yes, Milan Straps offers a carefully curated selection of leather, NATO and rubber straps specifically proportioned for 20mm lug width. All products are ready to ship, tested for mechanical compatibility and crafted with excellent-quality artisanal materials.

A quality leather strap with vegetable tanning, worn with regular rotation (not permanently daily), typically lasts 3–5 years before visible wear appears. Lifespan depends on moisture exposure, perspiration and frequency of use. Rubber lasts 4–7 years. Dense cotton NATO can last over 8 years if regularly dried.