Longines
Conquest L3.380.4.76.6— lug 15mm
Longines Conquest L3.380.4.76.6: 15mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 15mm lug width to preserve the original sartorial balance."
Technical Specifications
Longines L3.380.4.76.6The essential strap measurement.
Browse 15mm straps →L3.380.4.76.6
Longines caliber L296.2 Hours, Minutes, Seconds | Date | Moonphase
The Heritage
FAQ
What is the lug width of the Longines Conquest L3.380.4.76.6?
The lug width of the Longines Conquest L3.380.4.76.6 is 15mm. This non-standard measurement requires specific straps: it is not compatible with 16mm or 18mm lug widths. To verify the measurement, use a digital calliper and measure the distance between the metal pins emerging from the case back.
Which strap material is best suited for the Longines Conquest L3.380.4.76.6?
Alligator in cognac or black tone is the most elegant choice for the Conquest, as the natural grain of crocodile leather reflects the watch's disciplined character. Vegetable-tanned calf offers progressive patina and aesthetic ageing, whilst shell cordovan provides a suppleness that emerges over time. For seasonal rotation, nylon NATO straps are a tactical alternative.
How do I change the strap on my Longines Conquest L3.380.4.76.6?
Strap removal on the Conquest is performed by sliding out the metal pins (spring bars) connecting the strap to the lugs. Use a dedicated tool (spring bar tool) or a thin blade, insert it into the small gap between the lug and strap, lift carefully and slide the pin free. Repeat on the second lug, then install the new strap by sliding the pins into their corresponding seats until they click securely.
Is the Longines Conquest L3.380.4.76.6 compatible with aftermarket 15mm straps?
Yes, the Conquest is fully compatible with high-quality aftermarket straps in the 15mm size. It is essential to verify that the new strap has the correct spring bar seat width (standard: 1.8mm pin diameter). Milano Straps offers a collection of artisan 15mm straps ready for shipment and customisable in leather, colour and stitching.
How long does a natural leather strap last on the 15mm lugs of the Conquest?
A high-quality natural leather strap lasts approximately 3-5 years with regular wear, provided adequate maintenance is applied. Durability depends on: frequency of wear, climate (humidity shortens lifespan), protective treatments applied, and leather type. Shell cordovan and alligator tend to last longer (5-7 years) compared to standard calf (3-4 years). Casati Milano's warranty on bespoke creations is 18 months.