Strap for Master Collection Date 38.5 Stainless Steel

The Longines Master Collection L2.628.4.78.3 features a lug width of 20 millimetres. This measurement is taken by placing a calliper between the two horizontal spring bar attachments on the case. A 20 mm lug width is the standard for many classic watches in this category, allowing excellent compatibility with quality aftermarket straps.

For the Longines Master Collection L2.628.4.78.3, we recommend alligator in brown or black tones to preserve formality, or vegetable-tanned calf leather for those desiring a strap that develops patina over time. Shell cordovan represents the premium choice for the purist. For sporting environments, a ballistic rubber or satin NATO strap ensures practicality without aesthetic compromise.

Strap replacement requires a spring bar remover tool (fork-shaped implement) to gently lift the spring bars that secure the strap lugs to the case. Position the tool beneath each bar, apply inward pressure and lift the lug. Insert the new strap by aligning the lug holes with the spring bars, then press until the bars snap into position. Avoid improvised tools to prevent scratching the lugs.

Yes, 20 mm aftermarket straps are fully compatible with the Longines Master Collection L2.628.4.78.3, provided they respect the correct lug width. High-quality artisanal straps crafted from genuine leather and hand-stitched offer an aesthetic and durability upgrade over OEM straps whilst maintaining complete mechanical compatibility.

A quality leather strap, with vegetable tanning or shell cordovan, typically lasts 3-5 years with daily wear. Durability depends on usage (humid environments shorten lifespan), care (regular cleaning with soft cloth) and material choice. Shell cordovan tends to last longer than standard calf. Periodic maintenance and alternating with other straps significantly extend useful life.