Strap for Master Collection 40 Date Stainless Steel / Blue-Diamond / Alligator XL

The lug width of the Longines Master Collection L2.793.4.97.2 is 21 mm. This is the distance between the inner shoulders of the two lugs on the case. This specific measurement requires strap options that are precisely compatible with this width.

For the Master Collection L2.793.4.97.2, we recommend an alligator strap with vegetable tanning in dark brown or black, or a calf leather with fine grain and natural patina. These materials emphasise the watch's classical and sophisticated character. For a more sporty aesthetic, a ballistic nylon NATO or FKM rubber strap are equally excellent choices.

Strap replacement involves removing the spring bars that secure the old strap to the lugs of the case. Using an appropriate tool (spring bar removal tool), compress the bar, extract the old strap, then insert the new one by aligning it with the lugs. Professional service by Casati Milano ensures precision and protection of the case.

Yes, you can use high-quality aftermarket straps with a 21 mm lug width. MilanoStraps offers handcrafted compatible straps, customisable in material, colour, initials, and thread colour. Compatibility is guaranteed by verifying that the strap is specifically made for the 21 mm lug width.

A high-quality leather strap (alligator or calf leather with vegetable tanning) typically lasts 3–5 years with daily use, developing natural patina over time. Durability depends on frequency of use, exposure to sunlight and moisture, and maintenance care. Rubber or NATO straps have greater resistance to wear and external factors.