Strap for Master Collection Date 25.5 Stainless Steel / Black / Bracelet

The lug width of the Longines Master Collection L2.128.4.57.6 is 13mm, a standard measurement for this ultra-slim feminine collection. This width is measured by positioning a ruler on the inner case between the lugs, without forcing. The 13mm size is a selective dimension in the strap market, making this model distinctive and requiring specialised artisanal straps to guarantee correct compatibility and proportions.

The best strap depends on the intended use. For formal and evening occasions, alligator or vegetable-tanned calf leather represent excellence: the natural texture and patina that develops over time create perfect aesthetic harmony with the watch's refinement. For versatile daily wear, a traforated rubber or NATO strap maintains formality while protecting the watch from friction. Recommended colours: medium brown, black, dark blue, or dark burgundy for maximum elegance.

To change the strap, position the watch with the dial facing downwards. Using a specialised tool (pry bar or lug remover), gently push inward to release the lug from its seat. Proceed first from one side, then the other. Once the lugs are freed, insert those of the new strap into the same guide. Never force: the lug must enter smoothly. If your Longines features passants or keeper loops, verify that the new strap has the same proportions to avoid stressing the case soldering.

Yes, absolutely possible and recommended. Aftermarket 13mm straps are fully compatible with the Longines L2.128.4.57.6 and offer vast choice in materials, colours and finishes that the OEM market does not provide. From vegetable tanning to alligator, from shell cordovan to technical fabrics, specialised artisanal straps guarantee superior quality and personalisation. Milano Straps offers ready-made and customisable 13mm straps, plus the Casati Milano atelier which produces bespoke to measure straps.

Leather strap longevity depends on material quality, tanning and use. High-quality alligator or shell cordovan with vegetable tanning lasts an average of 3-5 years with daily wear, developing a fascinating patina over time. Vegetable-tanned calf leather lasts 2-3 years before showing signs of buckle failure. The most frequent wear affects the thread and buckle rather than the leather itself. Milano Straps guarantees 18 months on Casati bespoke straps, but real longevity depends on maintenance: avoid prolonged moisture, do not stress in wet conditions, occasionally apply natural balms. Traforated rubber straps last 4-6 years without significant deterioration.