Strap for Royal KonTiki GMT Black / Bracelet

The lug width of the Eterna Adventure 7740.41.41.0280 is 20mm. This measurement is critical to ensure proper compatibility between the strap and the case lugs. An incorrect lug width would result in visual misalignment and potential stability issues.

For the Eterna Adventure 7740.41.41.0280, we recommend a strap in alligator leather with vegetable tanning or a fine-grained calf leather. These materials maintain the balance between the watch's sporting vocation and refined construction. For more demanding use, a ballistic NATO or vulcanised rubber strap offers maximum functionality.

Replacing the strap on the 7740.41.41.0280 requires a spring bar removal tool. Position the watch on a stable surface, locate the pins at the lug ends, apply gentle inward pressure, and extract the worn strap. Align the new strap with the lugs and reinsert the pins. If you lack experience, we recommend having the strap changed professionally at Atelier Casati Milano.

Yes, numerous manufacturers offer 20mm aftermarket straps compatible with the 7740.41.41.0280. Milano Straps provides a curated selection of straps in various materials—alligator, calf, shell cordovan, rubber, and NATO—tested for geometric compatibility and construction quality. Always ensure the strap width matches the 20mm lug width.

The lifespan of a leather strap depends on material, usage, and environmental conditions. A vegetable-tanned alligator strap can last 8-12 years with regular maintenance and mindful wear. Standard calf leather typically lasts 5-8 years. Direct sunlight exposure, water, and humidity accelerate ageing. Proper maintenance—periodic cleaning and conditioning—significantly extends longevity.