Strap for Master Collection Date 25.5 Stainless Steel - Yellow Gold / Black / Bracelet

The lug width of the Longines Master Collection L2.128.5.57.7 is 13 millimetres. This measurement represents the precise distance between the two lugs on the case, and it is essential for selecting a compatible aftermarket strap. Millimetric precision is crucial: an error of even half a millimetre compromises the overall visual harmony of the watch on the wrist.

For the L2.128.5.57.7, we primarily recommend an alligator strap (natural or premium crocodile) in deep brown or black tones, which enhances the contrast with the two-tone yellow gold and steel case. Alternatively, an artisan-crafted calf leather strap offers softness and a compelling natural aging patina. For more casual contexts, a silk or heavyweight cotton NATO strap provides versatility whilst maintaining sobriety.

Strap replacement is accomplished using the spring bars that pass horizontally through the case lugs. Using a dedicated tool (spring bar remover) or a thin needle, compress the internal spring on one side to release the worn strap. Insert the new strap, ensuring the spring bar is fully locked on both sides. If you lack experience, we recommend consulting a professional watchmaker or our Casati Milano atelier to avoid damage to the case.

Yes, numerous high-quality aftermarket straps are compatible with the L2.128.5.57.7 thanks to its standard 13mm lug width. Milano Straps offers an extensive collection of 13mm straps crafted from alligator, calf leather, shell cordovan and vegetable-tanned materials. Each strap is customisable in length, initials and stitch type, ensuring a bespoke result tailored to your wrist and aesthetic preferences.

An artisan-quality leather strap (alligator, calf or shell cordovan) maintains structural integrity between 5 and 10 years of daily wear, depending on usage intensity and care applied. The leather patinas naturally, developing an aged appearance that many collectors find more compelling than the original finish. Milano Straps guarantees 18 months on its production, though the strap may function perfectly well beyond this period if subjected to routine maintenance (avoiding prolonged water exposure, applying protective balms periodically).