Strap for 1832 Automatic 30 Stainless Steel / Beige MOP

The Longines 1832 L4.325.4.87.2 features a lug width of 15mm. This measurement represents the internal distance between the two case lugs and is the manufacturing standard for the 1832 collection in 30mm models. It can be easily verified using a caliper or tailor's ruler positioned perpendicular to the lugs.

The choice depends on intended use and aesthetic preference. For daily elegance, natural alligator with vegetable tanning emphasises skin texture against the brushed case. Italian calf or shell cordovan develop natural patina evolution. For sports contexts, canvas NATO or sponge rubber maintain visual proportion relative to the 30mm diameter.

Place the watch on a soft surface with the case face down. Locate the two lateral lugs and use a spring bar tool or small flat screwdriver to gently push the spring bar from one side to the other, releasing the internal spring mechanism. Repeat on the second lug, then remove the old strap and insert the new one, ensuring both spring bars are perfectly aligned and locked on both sides.

Yes, any strap with a 15mm lug width is compatible. Verify that the internal opening between the strap terminals (bar width) matches 15mm precisely. Bespoke leather straps from ateliers such as Casati Milano guarantee manufacturing precision and allow aesthetic customisation whilst maintaining the watch's structural integrity.

A quality artisanal leather strap lasts between 3 and 5 years under moderate daily wear, depending on the material and tanning process used. Shell cordovan with vegetable tanning evolves positively over time, developing rich patina. Longevity extends if the strap is rotated with others (non-continuous wear) and kept away from extreme humidity and direct heat. Casati Milano guarantees 18 months on the finished product.