Strap for Master Collection Power Reserve

The lug width of the Longines Master Collection L2.666.8.78.5 is 20mm. This measurement represents the distance between the two lateral lugs of the case where the strap attaches. To verify it correctly, use a calliper positioned perpendicularly between the two lugs: the measurement must be accurate to the millimetre to ensure optimal compatibility with aftermarket straps.

For the L2.666.8.78.5 in Pink Gold, we recommend alligator in medium brown or shell cordovan in cognac tones: both materials create a sophisticated aesthetic dialogue with the warmth of rose gold and develop complementary patinas over time. Structured-grain calf leather in brown or hazelnut offers a more robust alternative resistant to scratching. For extended versatility, black FKM rubber or navy fabric NATO straps allow casual-chic reinterpretations of the timepiece.

The strap is changed by removing the spring bars that hold it locked to the case lugs. Use a dedicated tool (steel bar or strap removal tool) inserting it gently into the lateral slot of each spring bar: once released, the old strap slides away from the lugs. Insert the new strap by aligning the holes with the lugs and reinserting the spring bars until they click into place. If you are inexperienced, it is advisable to consult a watchmaker or entrust the operation to Casati Milano.

Any strap with a 20mm lug width is compatible with the L2.666.8.78.5. On milanostraps.it you will find a complete selection of artisanal straps in alligator, shell cordovan, calf leather and fabric materials, all available in the 20mm size and customisable in length, initials and stitching colour. Compatibility is guaranteed by the standardisation of lug width: there are no constructive limitations.

A quality leather strap (alligator, shell cordovan, calf leather) typically lasts 3-5 years with regular daily use, conditioned by construction quality and maintenance. Constant exposure to sweat, moisture and sunlight accelerates the ageing of the leather. Vegetable tanning (tannin) offers greater longevity compared to chrome tanning. Artisanal straps from milanostraps.it benefit from an 18-month warranty if made by Casati Milano, covering manufacturing defects and premature failures due to manufacturing faults.