Strap for Master Collection 44 Retrograde Power Reserve Stainless Steel / Silver-Arabic / Bracelet

The lug width of the Longines Master Collection L2.716.4.78.6 is 20mm. This measurement is standard for 44mm Master Collection models and is essential for maintaining harmonious proportions between the case and strap. Always verify the measurement using a digital calliper positioned between the two lateral lugs of the case without applying excessive pressure.

Cognac or dark brown alligator represents the choice of maximum aesthetic coherence: natural grain and patina development over time create fascinating contrast with the white dial. Shell cordovan is a superior quality alternative due to its density and profound lustre. For daily wear, brushed taupe calf maintains elegance with practicality. NATO fabric is a versatile solution for sporting environments or perspiration-prone conditions.

Changing the strap on the L2.716.4.78.6 requires: 1) a spring bar tool (readily available online); 2) gentle positioning of the tool beneath the metal lug pin; 3) moderate pressure to compress the internal spring; 4) extraction of the old strap with slight leverage; 5) insertion of the new 20mm strap until the spring mechanism clicks into place. Perform this operation on a soft surface to prevent scratches on the case.

Yes, any strap with a 20mm lug width is compatible with the L2.716.4.78.6. Artisanal quality straps—crafted from alligator, shell cordovan or vegetable-tanned leather—maintain correct aesthetic proportions. They also offer customisation: choice of leather, custom stitching and specific wrist size adjustment. Always verify the lug width before purchase to prevent forced installations.

The lifespan of a leather strap depends on the material and usage: alligator and shell cordovan with vegetable tanning last 5–8 years with daily wear thanks to fibre density; vegetable-tanned calf 4–6 years; industrial standard leather 2–3 years. Visible ageing—darkening, edge wear, patina development—is positive character, not deterioration. Environmental factors (perspiration, humidity, sunlight) accelerate ageing. Casati Milano straps include an 18-month warranty.