Strap for Master Collection Chronograph

The lug width of the Longines Master Collection L2.693.4.51.6 is exactly 20 mm. This measurement is determined by the proportions of the 44 mm case and the approximately 52 mm overall length. When purchasing an aftermarket compatible strap, verify that the distance between the inner lug shoulders is precisely 20 mm. If the strap is already mounted, carefully remove it by lifting the lug pins with an appropriate tool (for example, a lug removal tool) and measure the housing space.

The best suited strap depends on use and aesthetics: alligator in vegetable tanning is the heritage choice par excellence, with regular grain and patina developing over time. Box calf offers superior wrist comfort due to reduced thickness, ideal given the substantial case size. Shell cordovan provides rigidity and lustre that dialogue well with satin-finished steel. For a casual approach, a NATO strap in ballistic canvas grey charcoal or navy blue ensures versatility and security through its double-pass design.

To change the strap: 1) Obtain a lug removal tool or small flathead screwdriver. 2) Flip the watch over and locate the lug pins. 3) Gently lift the pin from the first side (typically it slides laterally). 4) Remove the old strap. 5) Insert the new strap by aligning the hole with the pin. 6) Reinsert the pin, ensuring it is fully inserted and locked. Repeat for the other side. Take care not to scratch the case during the operation.

Yes, any 20 mm strap of good quality is compatible with the Longines Master Collection L2.693.4.51.6, provided it meets the standard lug width. Handcrafted straps in alligator, calf, shell cordovan or ballistic canvas produced by specialised ateliers offer superior quality to OEM straps. Always verify that the lug width is 20 mm and that the strap shoulder is slightly rounded to fit the case curvature without forcing.

A high-quality leather strap with vegetable tanning, if crafted from premium hides and properly maintained, typically lasts between 3 and 6 years with regular use. Vegetable-tanned leather tends to develop attractive patina and harden slightly over time, extending durability. Shell cordovan, being denser and more robust, can exceed 8 years. Determining factors include sun exposure, humidity and frequency of use. Minimal maintenance (gentle cleaning with a damp cloth, occasional application of leather balm) significantly extends the strap's lifespan.