Strap for Master Collection 38.5 Day Date Stainless Steel / Yellow Gold / Black-Diamond / Bracelet

The lug width of the Longines Master Collection L2.755.5.57.7 is 20 mm. This dimension is standard for many Swiss classics, though not universal; verification is essential before purchasing an aftermarket strap.

For this model, a caramel alligator strap or vegetable-tanned calf leather in chestnut brown represents the most coherent choice with the watch's horological identity. If the case is yellow gold, caramel brown amplifies elegance; for stainless steel, burgundy or black are sophisticated alternatives.

Using a spring bar tool, compress the internal spring of the pin, extract the old strap, and insert the new one. Perform this operation on a soft cloth to avoid scratching the case. If uncertain, consult a qualified watchmaker or Casati Milano atelier for installation.

Yes, provided the lug width is exactly 20 mm. Online artisanal straps are generally compatible, but always verify technical specifications. For perfect fit without lateral play, bespoke straps from Casati Milano offer micro-adjustments impossible with industrial products.

A quality leather strap typically lasts 5 to 10 years with proper care, depending on tanning type and daily use. Alligator and shell cordovan offer superior longevity compared to calf leather. Casati Milano provides an 18-month warranty on artisanal straps, and wear is considered a positive patina element.