Strap for Evidenza 33.1 Full Calendar

The lug width of the Longines Evidenza L2.671.4.58.6 is precisely 18 mm. This measurement refers to the distance between the two spring bar seats (the protruding metal ears on the side of the case). Accurate measurement is essential to ensure proper strap fit: an 18 mm strap will sit flush within the lateral lugs, ensuring neither excessive play nor fitting difficulty.

For the Longines Evidenza L2.671.4.58.6, alligator leather in black or vegetable-tanned calf are the most harmonious choices. Alligator respects the aesthetic purity of the case with its regular geometric pattern, whilst vegetable-tanned calf develops a beautiful natural patina over time. For daily practical use, NATO webbing or vulcanised rubber straps maintain the overall balance of the watch. Your choice depends on intended use: formal, versatile, or casual-sporty.

To change the strap on the Evidenza L2.671.4.58.6, use a spring bar tool to remove the spring bars (small metal pins linking the strap to the case). Position the tool in the groove on the bar, press gently toward the opposite side to compress the internal spring, then extract the bar from its seat. Repeat for the second bar. When installing your new 18 mm strap, ensure the bar passes through the strap loops before reinserting the spring bars. If unfamiliar with this procedure, consult a qualified watchmaker.

Yes, the Longines Evidenza L2.671.4.58.6 accepts any quality aftermarket strap in the correct lug width (18 mm). Compatible straps in leather, rubber, fabric and metal are available from specialist suppliers such as MilanoStraps. Ensure the measurement is precisely 18 mm and that construction quality is commensurate with your watch's balanced aesthetics—the case deserves a proportionate, carefully crafted strap.

Leather strap longevity depends on material type and usage patterns. An artisanal shell cordovan or alligator strap typically lasts 3–5 years with moderate daily wear, developing an appealing patina. Vegetable-tanned calf lasts 2–4 years before requiring replacement, though its appearance improves significantly with age. Chrome-tanned calf (lower quality) lasts 1–2 years. Constant exposure to moisture, heat and perspiration accelerates ageing: storing the strap in dry conditions and rotating between multiple straps considerably extends lifespan.