Technical Archive

Longines
Conquest L3.430.5.02.6— lug 17mm

Longines Conquest L3.430.5.02.6: 17mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Conquest 34 Stainless Steel - Pink Gold / Green / Bracelet

Artisanal Note

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

Technical Specifications

Longines L3.430.5.02.6
Lug Width
17 mm

The essential strap measurement.

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Reference

L3.430.5.02.6

Movement

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

The Heritage

The Longines Conquest is powered by the L888.5 caliber with hour, minute, second and date functions, certified as a chronometer. The case features 17mm lugs and offers date indication in addition to time display. The movement guarantees chronometric precision according to official certification standards.

FAQ

What is the lug width of the Longines Conquest L3.430.5.02.6?

The lug width of the Longines Conquest L3.430.5.02.6 is 17 millimetres. This measurement is taken internally between both lugs, a construction detail that requires specifically dimensioned straps and is not compatible with common standard widths such as 18mm or 20mm.

Which strap best suits the Conquest L3.430.5.02.6 two-tone model?

For the two-tone Conquest in rose gold and stainless steel, we recommend dark brown or burgundy alligator for a formal appearance, or vegetable-tanned calf if you desire a patina that naturally evolves over time. For its sporting vocation, high-density FKM rubber in black maintains versatility and water resistance. Prussian blue with ivory stitching represents an elegant compromise between formality and dynamism.

How do I change the strap on my Longines Conquest L3.430.5.02.6?

Strap change is performed using the spring bars located at the case lugs. Obtain a spring bar tool, a small lever that gently compresses the internal spring. Insert the tool from inside, compress until the spring releases, extract the bar completely. Repeat for the opposite lug. Insert the new strap ensuring the spring bars lock correctly in both holes. If you lack the proper tools, Casati Milano offers professional strap-change service in Milan.

Are aftermarket 17mm straps truly compatible with the Conquest L3.430.5.02.6?

Yes, provided they are verified for accuracy: a tolerance of ±0.5mm is acceptable due to the natural elasticity of the metal lugs, but it is essential to measure between the inner shoulders of the lugs with a digital calliper. Milano Straps offers a curated collection of 17mm straps pre-tested for compatibility, eliminating uncertainty and offering easy exchange within the first month if necessary.

How long does a leather strap last on my Conquest?

Durability depends on leather quality and usage patterns. Premium calf or alligator with vegetable tanning, worn daily under normal conditions, typically lasts 3-5 years before replacement becomes necessary. Protection from excessive water, prolonged sun exposure, and forced creasing significantly extends useful life. Casati Milano guarantees 18 months on all artisanal straps, with the possibility of regeneration through specialised reconditioning services.