Longines
Conquest L3.376.3.87.7— lug 15mm
Longines Conquest L3.376.3.87.7: 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 L3.376.3.87.7The essential strap measurement.
Browse 15mm straps →L3.376.3.87.7
Longines caliber L152 Hours, Jumping Minutes, Seconds | Date
The Heritage
FAQ
What is the exact lug width of the Longines Conquest L3.376.3.87.7?
The lug width of this model is precisely 15mm. This dimension must be strictly observed to maintain the case's design proportions and ensure optimal wear. You can verify it by positioning a digital calliper perpendicularly across the case lugs, measuring the internal distance between the two suspension pins.
Which strap type is recommended for the Longines Conquest L3.376.3.87.7?
The ideal strap depends on your usage context. For absolute elegance, alligator in black or graphite grey with restrained stitching preserves the case's sobriety. Vegetable-tanned calfskin offers versatility and tactile comfort, ageing magnificently. For sporting activity or intensive daily use, a silk-cotton NATO strap or FKM rubber strap guarantees practicality and durability without aesthetic compromise.
How do you change the strap on a Longines Conquest with 15mm lugs?
Strap replacement requires a specific tool: a spring bar tool. Insert the slim blade into the small lateral gap between the pin and lug, applying gentle pressure to compress the pin's internal spring. Gently pull the strap towards you until complete disengagement. Repeat for the second pin. Reverse the procedure to install the new strap, ensuring the pins seat fully in both positions.
Is an aftermarket 15mm strap compatible with the Longines Conquest L3.376.3.87.7?
Yes, any strap with a 15mm lug width is compatible with this model. However, construction quality and materials vary significantly. Artisanal straps crafted from certified alligator, calfskin or shell cordovan guarantee superior durability and an ageing patina that enhances the watch over time. Avoid synthetic leather straps, which do not modify texture with time and tend to degrade prematurely.
How long does a leather strap last on a Longines Conquest L3.376.3.87.7?
Lifespan depends on material and usage frequency. Premium alligator, worn daily with care, maintains structural integrity for 4-6 years. Vegetable-tanned calfskin has an average lifespan of 3-4 years. Shell cordovan, if protected from prolonged direct sunlight, can exceed 7-8 years. Maintenance—drying after water contact, protection from extreme heat and humidity—significantly extends lifespan. The ageing of natural leather is not degradation: it is aesthetic evolution that increases the strap's sensory value.