Strap for Conquest 35 Quartz Stainless Steel Diamond Bezel

The lug width of the Longines Conquest L3.280.0.57.7 is 17.00mm. This specific measurement is essential for selecting a compatible strap. Measurement should be taken perpendicularly between the inner walls of the two lugs using a digital calliper for accuracy.

For the 35mm Conquest in stainless steel, an alligator strap with vegetable tanning represents the most coherent choice with the watch's design philosophy. The natural drape of the leather and patina development over time pair perfectly with the model's elegant proportions. Valid alternatives include shell cordovan (for superior density and exceptional ageing) and vegetable-tanned calf (for daily versatility).

Strap replacement requires a spring bar tool (a purpose-built lever instrument) to remove the elastic pins from the lugs. Position the watch on a soft surface, gently insert the tool under the pin from the inside, lift the spring bar and withdraw the worn strap. Insert the new 17mm strap ensuring both pins snap securely into the lugs.

Yes, absolutely. Any 17mm strap of superior construction quality fits the Conquest without compromise. Specialised online retailers offer catalogues of straps for this lug width, customisable in leather type, colour, width, thickness and thread colour. For artisanal results, bespoke strap makers create custom straps with direct selection of leathers.

Durability depends on material, tanning process and frequency of use. An alligator or shell cordovan strap with vegetable tanning resists 8-12 years with moderate daily wear, developing fascinating patina over time. Vegetable-tanned calf has slightly shorter lifespan (6-9 years), but compensated by early aesthetic ageing. Critical factors: direct sun exposure, constant sweat contact, humidity. Regular maintenance (gentle cleaning, annual conditioning) significantly extends useful life.