Strap for Master Collection 44 Chronograph Stainless Steel / Black-Roman / Bracelet

The lug width of the Longines Master Collection L2.859.4.51.6 is 22mm. This measurement represents the distance between the two poles of the spring bar and is essential for aftermarket strap compatibility. Always measure with a ruler or digital calliper to avoid selection errors.

For the Master Collection L2.859.4.51.6, we recommend alligator leather in vegetable tanning (fine grain, evolving patina) or Apennine calf in vegetable tanning (thickness 1.3-1.5mm, natural oil absorption). Both harmonise the sophistication of the satin-finished 44mm case with tactile coherence. NATO straps remain a valid option for daily versatility. Avoid rubber on this model.

Use a spring bar tool to gently lift one pole of the spring bar (the small metal hook). The front strap disengages from the case. Repeat on the opposite side. Insert the new strap by first aligning one pole in the slot, then gently lift the opposite spring bar to secure the second pole. Avoid direct impacts on the case.

Yes. All straps designed for 22mm lug width are compatible with the Master Collection L2.859.4.51.6. Milano Straps offers a selection of artisanal 22mm straps in alligator, calf, NATO and cordovan, customisable in sizes, finishes and stitching. Always verify that the strap does not exceed 5mm total thickness for correct fit to the case lugs.

A vegetable-tanned strap (alligator or calf) typically lasts 4–6 years of daily wear, with variations depending on frequency of use, climate (reduced humidity preferred) and maintenance (periodic beeswax treatments). The leather develops a natural patina, gaining character. The steel buckle rarely wears out. If the strap shows cracking or structural thinning, it is time to replace it. Milano Straps guarantees 18 months on its bespoke straps.