Strap for Conquest 29.5 Quartz Stainless Steel Diamond Bezel

The lug width of the Longines Conquest L3.258.0.88.6 is 20mm. This measurement represents the linear distance between the two lateral attachment points of the case where the strap is inserted. To verify it, measure from the inner part of one lug to the other using callipers or a flexible ruler. Only 20mm straps will connect correctly without play or forcing.

The best strap depends on your use: for daily elegance we recommend dark brown alligator or vegetable-tanned leather; for durability and practicality, satin rubber or NATO fabric; for luxury without compromise, shell cordovan with natural patina development over time. Your choice should reflect your wearing style and prevalent context of use.

Use a spring bar tool. Position the watch on a soft surface, locate the small lateral hole of the lug, insert the tool to slightly compress the internal pin and slide it outward. Repeat for both lugs. To fit the new strap, align the strap holes with the lugs and press the pin until it clicks into place. If unsure, consult a jeweller or the Casati Milano atelier.

Yes, any 20mm width strap is compatible with the Conquest L3.258.0.88.6. milanostraps.it offers a wide selection of artisanal 20mm straps in alligator, calf, NATO and rubber, customisable in size, initials and stitching thread choice. For fully bespoke solutions, the Casati Milano atelier creates straps with personal leather selection.

Durability depends on use and construction quality. A vegetable-tanned calf strap, if kept dry and not subjected to continuous twisting, lasts 3-5 years. Shell cordovan resists longer, up to 7-10 years. Alligator varies from 4 to 8 years depending on grain density and frequency of use. Regular maintenance (drying after moisture, avoiding prolonged water exposure, storage away from damp) significantly extends longevity.