Strap for Master Collection Date 25.5 Stainless Steel / Silver

The lug width of the Longines Master Collection L2.128.4.78.3 is 13mm. This measurement represents the external distance between the two spring bar attachments on the case. A strap not specifically dimensioned for 13mm will result in poor fit and compromise both aesthetics and wear security.

For this model, straps in vegetable-tanned alligator are recommended to enhance the classic elegance of the Master collection, alternatively calf leather for superior comfort. A quality NATO or FKM rubber strap ensures practical daily wear. The choice depends on intended usage and wearing context.

Strap removal requires extracting the spring bars located in the lug seats (13mm apart). Use a dedicated spring bar tool or flat-head wedge to avoid case damage. The new strap must have pass-throughs correctly dimensioned to accommodate the bars without forcing. Perform the operation on a soft surface to prevent scratches.

Yes, provided the strap is specifically dimensioned for 13mm lug width. Artisanal bespoke leather straps guarantee perfect compatibility and often superior construction quality and materials compared to OEM solutions. Verify that the pass-throughs are calibrated to exact width and that stitching employs artisanal techniques.

Leather strap longevity depends on tanning method and daily use. A vegetable-tanned alligator strap, when properly maintained (avoiding prolonged moisture and salt environments), can last 5-8 years of moderate wear, developing a golden patina that enhances aesthetic value. Calf leather, more delicate, averages 3-5 years. An FKM rubber strap can endure 7-10 years. Regular rotation between straps significantly extends their lifespan.