Strap for Conquest 34 Quartz Moonphase Stainless Steel / White / Bracelet

The lug width (distance between the spring bars) of the Longines Conquest L3.381.4.16.6 is 17mm. This measurement determines the exact width required for a compatible strap. To verify, remove the original strap and measure from the inner edge of one lug to the inner edge of the other with a ruler.

The ideal strap depends on use: for formal elegance, alligator leather or shell cordovan are aristocratic choices that develop natural patina over time. For daily wear, vegetable-tanned calf offers comfort and durability. For sporadic athletic occasions, a charcoal grey NATO with steel deployante maintains proportions on the 34mm case without excess.

Strap replacement requires a spring bar tool or professional watchmaker assistance. Position the watch horizontally, apply downward pressure on the spring bar at the base of each lug using the tool, remove the old bar, extract the old strap, insert the new strap by aligning the holes, and push the spring bar into the first hole until it clicks into place. Repeat for the opposite lug.

Yes, it accepts any strap with a 17mm lug width and compatible spring bars (usually standard type). Always verify the recommended thickness (1.2–1.6mm) to avoid attachment issues. Online retailers offer customisable leather, rubber, canvas NATO, and metal straps in this specific width.

A quality leather strap (alligatore, cordovan, vegetable-tanned calf) with daily wear lasts 3–5 years before replacement becomes necessary, with longer durability if rotated seasonally. Natural patina continues developing during the first 18–24 months. Exposure to sweat, chlorine, or humidity accelerates wear; periodic natural wax protection extends the strap's lifespan.