Strap for Presence Automatic 34.5mm Stainless Steel / PVD Gold / White / Bracelet

The lug width of the Longines Presence L4.821.2.12.7 is 18 mm. This measurement is taken internally, from the innermost point of one lug to the other, excluding the case thickness. Maintaining this measurement is critical to prevent lateral play and ensure proper load distribution on the wrist.

The choice depends on intended use: for formal contexts, vegetable-tanned alligator offers elegance whilst developing natural patina over time. For daily versatility, vegetable-tanned calf leather provides softness and aesthetic vitality. For active environments, high-density rubber offers grip and absolute water resistance. Cotton NATO adds sporting character whilst maintaining Swiss horological credibility.

The procedure requires a spring bar tool to remove the springs from the lugs. Position the tool on the small opening of the spring, gently push toward the case to release tension, then extract the strap. For installation of a new strap, insert the springs into the case attachments ensuring the spring is fully positioned and locked.

All straps with an 18 mm lug width are compatible. MilanoStraps offers a comprehensive collection of 18 mm straps in alligator, calf leather, rubber and fabrics specifically crafted for this dimension, with personalisation options in length, initials and stitching type.

A quality vegetable-tanned leather strap typically lasts 3–5 years with daily use and regular maintenance. Longevity depends on exposure to perspiration, humidity and protection from sunlight. A rubber strap has similar durability (3–4 years), whilst vegetable-tanned alligator tends to age more gracefully, developing patina and maintaining functionality beyond 5 years with proper care.