Technical Archive

Longines
Conquest L3.430.4.02.6— lug 17mm

Longines Conquest L3.430.4.02.6: 17mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Conquest 34 Stainless Steel / Mint Green / Bracelet

Artisanal Note

"This model requires a precise 17mm lug width to preserve the original sartorial balance."

Lug Width

17 mm

The essential strap measurement.

Browse 17mm straps →

Reference

L3.430.4.02.6

Movement

Longines caliber L888.5 Hours, Minutes, Seconds | Date | Chronometer

The Heritage

The Longines Conquest L3.430.4.02.6 is a 34 mm stainless steel watch from the historic Conquest collection, founded in 1954. It features a Longines L888.5 quartz movement with certified chronometer precision and a date window at 3 o'clock. The satin-finished steel case maintains the collection's robust character while its compact proportions suit various wrists and contexts. Lug width is 17 mm.

FAQ

What is the lug width of the Longines Conquest L3.430.4.02.6?

The lug width of the Longines Conquest L3.430.4.02.6 is 17 mm. This measurement is specific to Conquest models with a 34 mm diameter case and represents the internal distance between the two lugs where the strap must fit. Always verify the measurement with a calliper before ordering an aftermarket strap.

What is the best strap for the Longines Conquest L3.430.4.02.6?

The best strap depends on intended use. For formal elegance, Nile alligator paired with a steel deployante is the uncompromised choice. For versatile daily wear, vegetable-tanned calf leather in dark brown or black offers natural patina and durability. For sport occasions, a textile NATO or FKM rubber strap ensures practicality and breathability.

How do I change the strap on the Longines Conquest L3.430.4.02.6?

The process is straightforward: use a spring bar tool (flat-tipped implement) to gently push downward on the spring bar beneath the lugs, creating sufficient space to slide out the old strap end. Repeat for the other end. Insert the new strap by reversing the process, ensuring the spring bar clicks firmly into place within the case. No specialised tools beyond the spring bar tool are required.

Is the Longines Conquest L3.430.4.02.6 compatible with aftermarket straps?

Yes, it is fully compatible. The standard 17 mm lug width accommodates any artisanal or industrial strap of that measurement. Always verify that the strap has been specifically manufactured for 17 mm and features appropriate holes or deployante sizing for your wrist (typically 16–20 cm for this model).

How long does a natural leather strap last on a daily-wear watch?

A high-quality natural leather strap (alligator or vegetable-tanned calf) lasts between 3 and 7 years under intensive daily use, depending on care and exposure to moisture, perspiration, and sunlight. Vegetable tanning typically outlasts chrome tanning. Clean your strap regularly with a soft, dry cloth and allow it to air dry completely if exposed to water. Rotating frequently among multiple straps significantly extends the life of each one.