Strap for Master Collection 38.5mm Power Reserve Pink Gold / Silver-Arabic / Alligator

The lug width of the Longines Master Collection L2.708.8.78.3 is 20.00mm. This specification represents the internal width between the two lug shoulders of the case. To measure it accurately, use a digital calliper, positioning it from the inside of one lug to the inside of the other, with the watch lying flat. Longines manufacturing tolerances are ±0.2mm, so a measurement between 19.8mm and 20.2mm falls within factory specifications.

For the Master Collection in pink gold 39mm, genuine alligator is the most natural choice: the regular texture and fine grain create an elegant visual dialogue with the pink gold case. Vegetable-tanned calf leather represents a reliable alternative for daily wear, developing a golden patina over time. Shell cordovan, for formal occasions, offers a smooth and reflective surface that emphasises the classic geometry of the case. For versatility, natural rubber in grey-tortoise tones enables transitions between formal and informal contexts.

Changing the strap on a Longines Master Collection requires specific tools: a spring bar removal tool and a stable work surface. Position the watch with the lug facing upwards. Insert the tip of the removal tool into the small side hole of the lug, pushing gently to compress the internal spring and release the bar. Repeat for the lower lug. Insert the bars of the new strap by pushing until you hear or feel the safety spring click. Verify that the lug is secure before wearing the watch. For premium leather straps or for added safety, contact an authorised service centre.

The Longines Master Collection L2.708.8.78.3 is compatible with any quality strap built for 20mm lug width, provided it respects Longines manufacturing tolerances (19.8mm-20.2mm). Artisanal straps in alligator, calf, shell cordovan, natural rubber and fabric are available online in 20mm width. Avoid low-quality generic straps: the precision engineering of the Longines case deserves noble material partners. Customisable artisanal straps guarantee better fit and durability compared to mass-produced products.

Leather strap lifespan depends on material, usage and maintenance. Genuine alligator, well cared for, lasts 5 to 10 years of regular daily use. Vegetable-tanned calf resists 3 to 6 years with intensive use, thanks to its structural robustness. Shell cordovan, despite being noble, is prone to cracking if exposed to excessive moisture and lasts 4 to 7 years. Maintenance is crucial: clean the strap regularly with a soft cloth, avoid water immersion, protect from intense perspiration and store in a dry environment. A quality artisanal strap can be regenerated or only the worn section replaced, extending the useful life of the piece.