Eterna
Contemporary 2970.53.17.1325— lug 20mm

The lug width is 20 millimetres. This measurement represents the distance between the inner points of the two lugs where the strap is fitted. It is the fundamental specification for selecting compatible straps without mounting defects or lateral play.

It depends on intended use. For formal contexts, natural alligator with vegetable tanning or Italian calf leather with fine grain enhance the elegance of the 41-millimetre case. For sportive versatility, a grey-blue NATO or natural vulcanised rubber maintain contemporary proportions without formal rigidity.

Identify the lug fastening system: typically small pins or spring bars are present. Use a spring bar tool to push the pin inward, slightly widening the lug, then extract the old strap. Insert the new strap by aligning the holes to the lugs, then reinsert the pin until the click of securing.

Yes. All straps constructed to ISO standard for 20-millimetre lug width are compatible. Artisanal quality brands guarantee construction in natural leather with sartorial finishes, reinforced stitching and buckles in brushed stainless steel or burnished bronze, suitable to Eterna's contemporary character.

An alligator or calf leather strap with vegetable tanning lasts between 2 and 4 years with daily wear. Durability depends on exposure to humidity, perspiration and UV rays. A natural vulcanised rubber strap resists between 3 and 5 years. Regular maintenance (gentle cleaning, rapid drying after moisture exposure) considerably extends useful life.