Longines
Conquest L3.430.4.99.6— lug 17mm
Longines Conquest L3.430.4.99.6: 17mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 17mm lug width to preserve the original sartorial balance."
Technical Specifications
Longines L3.430.4.99.6The essential strap measurement.
Browse 17mm straps →L3.430.4.99.6
Longines caliber L888.5 Hours, Minutes, Seconds | Date | Chronometer
The Heritage
FAQ
What is the lug width of the Longines Conquest L3.430.4.99.6?
The lug width of the Longines Conquest L3.430.4.99.6 is 17 millimetres. This non-standard dimension requires careful strap selection to ensure smooth insertion into the lug holes without play. Always verify the measurement using a digital calliper or millimetre ruler, measuring the distance between the inner edges of both lugs.
Which strap is best suited for the Longines Conquest L3.430.4.99.6?
For your Conquest, we recommend alligator or shell cordovan straps: both materials emphasise classical elegance whilst maintaining the case's sporty character. Alligator offers natural grain and understated luxury; shell cordovan develops an unparalleled patina over time. Vegetable-tanned calf leather is perfect for those valuing ethical sourcing and breathability. Avoid overly thick straps: with a 34mm case, visual proportion is paramount.
How do I change the strap on my Longines Conquest L3.430.4.99.6?
You will need a spring bar tool to change your strap. Place the watch on a soft surface, locate the small metal pins protruding from the lugs, and insert the pointed end of the tool beneath the pin, applying gentle downward pressure. The pin will yield, allowing you to extract the strap. Repeat for the other lug. Reverse the procedure when installing the new strap, ensuring both pins are fully seated in their grooves.
Is an aftermarket 17mm strap compatible with the Longines Conquest L3.430.4.99.6?
Yes, any strap with a certified 17mm lug width is compatible with your Conquest. However, pay attention to lug depth (strap thickness): overly thick straps may create resistance during insertion. We recommend straps from specialised artisans who respect millimetre tolerances and use quality-certified materials to ensure longevity and comfort.
How long does a natural leather strap last on a Longines Conquest?
Lifespan depends on material, frequency of use, and environmental conditions. Quality alligator or shell cordovan resists 3–5 years with daily wear, developing patina and character. Vegetable-tanned calf maintains structure for 2–4 years, requiring occasional maintenance (gentle cleaning and conditioning). Natural ageing is not a defect but part of genuine leather's charm. Protect your strap from excessive moisture and dry it gently after water contact.