Strap for Conquest Quartz 34 Stainless Steel / Black

The lug width of the Longines Conquest L3.377.4.57.6 is 17mm. This measurement represents the internal space between the two spring bar pins connecting the case to the watch strap. To verify it, use a digital calliper, positioning it between the lugs. Compatible straps must have a width of 16-17.5mm to ensure secure fitting without excessive play.

The ideal strap depends on usage and personal preference. For classic elegance, dark brown alligator with cream stitching enhances the model's exploratory character. Shell cordovan offers density and progressive lustre, perfect for formal occasions. Cream-coloured calf leather with vegetable tanning suits summer versatility. NATO straps in canvas reference the military heritage, ideal for sporting environments. All materials are available in 17mm width on our online catalogue.

Strap replacement requires a spring bar tool, available in affordable kits. Position the tool in the small lateral hole on the spring mechanism, lift gently to release the spring, then withdraw the pin from the case. Repeat on the opposite side. To insert the new strap, align the pins with its interior and engage the spring with the tool until you hear a click. For assisted replacement, Casati Milano offers personalised strap changing services.

Yes, any strap with a 17mm lug width (tolerance 16-17.5mm) is compatible with the Longines Conquest L3.377.4.57.6. Milanostraps offers an extensive selection of artisanal straps in alligator, shell cordovan, calf leather and fabrics, all available in this size. Compatibility is guaranteed by our internal quality control. We recommend verifying the exact width of your strap before purchase using a calliper.

Durability depends on material and usage intensity. An alligator strap, with proper care (regular cleaning, quick drying after moisture exposure), offers 5-8 years of service. Shell cordovan, owing to its fibre density, can last 8-12 years. Vegetable-tanned calf leather, being softer, has a lifespan of 3-5 years depending on wear. Canvas NATO straps last 2-4 years. Milanostraps provides an 18-month warranty on all straps, while the Casati Milano atelier offers maintenance and reinforcement services by appointment.