Strap for Spirit 40.5

The lug width of the Longines Spirit L2.700.4.23.4 is 20 mm. This intermediate measurement, positioned between commercial standards, requires conscious strap selection. To verify with precision, use a digital calliper measured perpendicularly between the inner lugs at the strap attachment point.

The Longines Spirit L2.700.4.23.4 expresses its austere-aviatorial geometry most effectively with natural alligator leather in vegetable tanning, which amplifies design essentiality. Shell Cordovan represents the choice for those valuing the strap as a long-term investment, developing deep patina. Vegetable-tanned calf leather offers initial softness and chromatic evolution, whilst high-density NATO fabrics emphasise functional character without visual heaviness.

Strap replacement on the Longines L2.700.4.23.4 requires a spring bar tool. Position the watch on a stable surface, locate the small access hole on the case lug, insert the tool gently to release the spring bar, then remove the previous strap. Install the new strap by aligning the holes with the bars and reposition until the click-through of retention. Atelier Casati Milano provides personalised assistance for this operation.

Yes, the original strap of the Longines Spirit L2.700.4.23.4 can be replaced with any aftermarket strap featuring a 20 mm lug width. Superior quality artisanal straps, crafted with premium leather and precise finishing, guarantee perfect mechanical fit and durability over time. Always verify that the lug width corresponds exactly to 20 mm to prevent play or excessive tension.

A superior quality natural leather strap, featuring vegetable tanning and artisanal finishing, maintains structural performance between 18 and 36 months depending on usage intensity, climatic conditions and maintenance care. Shell Cordovan and alligator prove more resistant, developing stable patina beyond three years. Extended exposure to moisture, direct heat and perspiration accelerates ageing. Atelier Casati Milano provides an 18-month warranty and offers reconditioning services.