Strap for Lyre 35 Automatic Yellow

The lug width of the Longines Lyre L4.760.2.12.7 is 18 millimetres. This is a relatively compact dimension in the broader watchmaking landscape and requires careful sourcing among artisanal strap manufacturers, as standard catalogues rarely offer dedicated solutions for this specific gauge.

Premium-grade alligator (fine grain, aniline-dyed) represents the most elegant choice, as its regular grain structure dialogues naturally with the satin-brushed finish of the stainless steel case. Traditionally vegetable-tanned calf leather offers instead a patina that evolves over time whilst maintaining sophisticated aesthetics. For summer sports use, woven NATO in polyamide provides practicality whilst respecting correct proportions.

To change the strap, use a dedicated spring bar tool to compress and remove the metal spring bars that connect the lug width to the case. Insert the tool beneath the spring bar, compress gently, and slide the bar towards the case interior until the lug releases. Repeat for all bars, then mount the new strap by reversing the procedure. Handle with care to avoid scratching the case.

Yes, an aftermarket strap is fully compatible provided it features an 18-millimetre lug width and is equipped with standard spring bars of compatible diameter, typically 1.6–1.8 mm. Artisanal quality straps offer greater freedom in material and colour selections compared to official Longines catalogues, whilst guaranteeing precise construction tolerances.

The lifespan of a leather strap depends upon daily wear patterns, exposure to moisture, and tanning quality. Premium alligator or vegetable-tanned calf, with regular maintenance (damp cloth cleaning, protection from persistent rain), maintains aesthetic functionality between three and five years. Natural leather typically exhibits visual wear signs (creasing, discolouration) before structural failure, making replacement often an aesthetic rather than functional decision.