Strap for Evidenza 33.1 Full Calendar

The lug width of the Longines Evidenza L2.671.4.58.9 is 18mm, measured from inner lug seat to inner lug seat. This measurement is critical for proper strap fitment and must be verified with a rigid ruler positioned perpendicular to the case lugs, excluding the radius fillet.

Franco-African alligator represents the supreme choice, featuring consistent grain and patina that evolves over time. Alternatively, shell cordovan in burgundy tones offers superior material density and dignified ageing; vegetable-tanned calf remains the most accessible option with respectable ageing characteristics.

Strap replacement requires a spring bar tool. Position the watch face-down, insert the tool tip into the space between lug and strap, gently lift to release the internal elastic clasp of the lug, then remove the pin. Repeat on the opposite lug. For new strap installation, align the strap holes with the lug and insert the pin until it clicks into place.

Yes, any quality 18mm strap is compatible with the Evidenza, as the Longines lugs are standardised to this width. However, verify that the strap features robust pins and elastic clasps, and that total length is appropriate for your wrist (overall measurement should be verified before purchase).

An alligator or shell cordovan strap, with daily wear and moderate maintenance (occasional soft cloth cleaning, protection from standing water), lasts 3–5 years. Vegetable-tanned calf tends to wear slightly faster, in 2–3 years. Longevity depends on wear frequency, climate, skin perspiration and quality of original craftsmanship.