Strap for Conquest 29.5 Quartz Stainless Steel

The Longines Conquest L3.277.4.58.6 features a lug width of 15mm. This means that any replacement strap must have an internal width of exactly 15 millimetres to fit correctly into the case lugs. We recommend measuring with precision using calliper tools or a ruler to verify compatibility with aftermarket straps.

For this elegant 29.5mm ladies' Conquest, we recommend alligator leather or vegetable-tanned calf. Alligator grain provides subtle texture that contrasts beautifully with the case's brushed steel finish, while vegetable-tanned calf develops a rich patina over time. Both ensure comfort and longevity. For casual summer wear, a NATO or rubber-lined leather strap remains perfectly suitable.

Strap replacement is accomplished by removing the spring bars (small pins) that connect the case to the current strap. Use a dedicated spring bar tool to compress the internal spring slightly and extract the pin. Align the new strap's slots with the case lugs and reinsert the pin until you hear a clear click. If you lack experience, consult a professional watchmaker or visit our Casati Milano atelier.

Yes, the 15mm lug width accommodates quality aftermarket straps. Milano Straps offers a curated collection of bespoke leather straps in 15mm, handcrafted at the Casati Milano atelier. We customise thickness, length, leather type, stitching colour and steel hardware. All our products carry an 18-month warranty.

A quality leather strap, with proper maintenance, lasts between 3 and 7 years of daily wear. Longevity depends on material (alligator and shell cordovan age better than standard calf), frequency of use and environmental conditions (humidity, UV exposure). Once yearly, apply a dedicated balm formulated for non-pigmented leather. Our artisanal vegetable-tanned straps extend service life through superior density and construction quality.