Strap for Admiral GMT Ivory Bracelet

The lug width of the Longines Admiral L3.668.4.76.6 is 20 millimetres. This measurement is determined by the pentagonal case geometry and represents the internal distance between the two lateral lugs where the strap attaches. Using a digital calliper perpendicular to the lugs allows you to verify this specification with precision. Only straps with a 20mm lug width will fit correctly without mechanical play or forcing.

Alligator is the choice of absolute excellence: its natural grain and the patina it acquires over time impart nobility and sophistication. Vegetable-tanned calf represents an elegant alternative with authentic patina development. For a sporting interpretation, NATO canvas and polyamide evokes the model's military heritage. Vulcanized rubber is ideal for aquatic environments or high-perspiration conditions. Each material expresses a distinct interpretation of the Admiral.

The strap is changed by removing the two spring bars that connect the strap to the case lugs. Using a dedicated spring bar tool, apply light pressure to compress the spring and extract the bar from the lug hole. Repeat on the opposite side. Insert the new strap by aligning the holes at the ends with the spring bars, then compress the spring so the bar engages in the opposite hole. Ensure the spring bar is fully inserted and locked in place.

Yes, you can use aftermarket straps provided they have a 20mm lug width. High-quality artisanal straps represent an opportunity to personalise the model according to aesthetic and functional preferences. Always verify that the lug width is exact and that the spring bars are correctly installed. Specialised suppliers such as milanostraps.it offer 20mm straps customisable in leather, colour and details.

The lifespan of a leather strap depends on the quality of the material, frequency of wear and maintenance practices. An alligator strap of vegetable tannage can last 5-8 years if worn regularly and subjected to periodic maintenance (gentle cleaning, occasional conditioning with specific creams). Vegetable-tanned calf has similar longevity. To extend strap life, avoid prolonged exposure to water and direct heat sources. The 18-month warranty offered by Casati Milano for bespoke straps testifies to constructive and material quality.