Strap for Admiral Chronograph Grey

The lug width (ansa width) of the Longines Admiral L3.666.4.79.6 is 21mm. This measurement is the space between the watch lugs and remains fixed for this model. Any compatible strap must respect this dimension precisely for correct installation.

We recommend an alligator strap in vegetable tanning with dark brown or cognac colouration, which develops a patina harmoniously aligned with the steel case over time. Alternatively, burgundy shell cordovan offers structural rigidity and a more pronounced colour transition. For intensive use, waxed cotton NATO ensures moisture resistance without compromise.

Strap replacement requires a dedicated spring bar removal tool. Position the watch on a table with the lug side facing upward. Insert the tool into the spring hole, apply gentle pressure, and slide the strap out of the lug. Repeat for the opposite lug. When inserting the new strap, ensure the springs return to position with an audible click.

Yes, any 21mm aftermarket strap is compatible with the Admiral L3.666.4.79.6. Standard lug width ensures universal compatibility within the artisanal and commercial strap market. Always verify the measurement before purchase to avoid errors.

A quality artisanal alligator or calf leather strap typically lasts 3-5 years with regular use, depending on UV exposure, humidity, and frequency of wear. Natural ageing of the leather is part of the desired aesthetic. With periodic maintenance (gentle cleaning and annual conditioning), longevity extends significantly. Shell cordovan or vegetable-tanned straps develop an appreciable patina and may last considerably longer.