Strap for Master Collection 40 Chronograph Calendar Stainless Steel / Anthracite

The Longines Master Collection L2.673.4.61.2 features a lug width of 21 millimetres. This measurement represents the distance between the inner edges of the case lugs and ensures compatibility with standard 21mm straps available in a vast range of materials and finishes.

The best strap depends on your usage and aesthetic preferences. Black or navy blue alligator offers maximum refinement for formal contexts; brown cognac anilina calf guarantees versatility and ageing patina; shell cordovan introduces natural luminosity. A steel deployant clasp ensures practicality without visual compromise.

Remove the watch from your wrist. Using a dedicated spring bar tool, gently press the small internal metal button of the lug, then extract the elastic pin. Repeat the operation on the opposite lug. Insert the new strap by aligning the elastic pins to the corresponding holes and press until the locking click. Verify correct closure before wearing the watch.

Yes, aftermarket straps with a 21mm lug width are perfectly compatible with the L2.673.4.61.2. Ensure that the lugs are correctly dimensioned and that the elastic pins insert without forcing. Quality straps with a deployant or classic buckle fully respect the watch's proportions.

A quality anilina leather strap typically lasts 3-5 years with moderate daily wear. Vegetable tanning extends longevity to 7-10 years. Shell cordovan reaches 10-12 years. Lifespan depends on exposure to humidity, body perspiration and weekly wear frequency. Regular maintenance (timely drying, gentle cleaning) significantly extends strap life.