Strap for Osmior Automatic Single Push-Piece Chronograph Champagne

The Leroy Osmior Range LL101/3 features a lug width of 20mm. This measurement is standard for watches with a diameter between 40 and 42mm and represents the optimal balance between visual proportion and versatility in aftermarket strap selection. To verify the lug width of your watch with precision, measure the distance between the two attachment holes on the inside of the case using a digital calliper.

For the LL101/3 in rose gold, we recommend an alligator strap in cognac or cigar brown tones, which creates a natural chromatic continuity with the precious metal. An equally elegant alternative is vegetable-tanned calf in burgundy or dark brown, particularly suited to formal contexts. NATO fabric straps in beige, taupe grey, or navy blue maintain the luminosity of the rose gold without creating excessive contrast.

To change the strap on the LL101/3, it is first necessary to remove the current integrated bracelet by consulting a specialist watchmaker, as the monolithic structure requires specialised expertise. Once the original attachments have been removed, it is possible to install the new 20mm straps using the corresponding standard attachments. For precision work and to guarantee the integrity of the rose gold case, we recommend entrusting the task to specialists such as Atelier Casati Milano, available by appointment.

Yes, aftermarket straps in 20mm size are fully compatible with the LL101/3. Milano Straps offers a curated selection of straps in alligator, vegetable-tanned calf, NATO fabric and rubber, all ready for dispatch and customisable according to aesthetic preferences. Each strap is handcrafted to guarantee construction quality consistent with the luxury grade of the watch.

The lifespan of a leather strap depends on the material and usage. A quality alligator strap, with ordinary care, lasts an average of 3-5 years before requiring replacement. Vegetable-tanned calf, if kept dry and protected from excessive moisture, can last 2-4 years. The natural patina that develops over time is part of the aesthetic charm of these materials. To extend durability, avoid prolonged exposure to direct sunlight, humidity and contact with aggressive detergents.