Longines
Conquest L3.830.4.02.9— lug 21mm
Longines Conquest L3.830.4.02.9: 21mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 21mm lug width to preserve the original sartorial balance."
Technical Specifications
Longines L3.830.4.02.9The essential strap measurement.
Browse 21mm straps →L3.830.4.02.9
Longines caliber L888.5 Hours, Minutes, Seconds | Date | Chronometer
The Heritage
Compatible Straps
Selected for the 21mm lug width of the Conquest
FAQ
What is the lug width of the Longines Conquest L3.830.4.02.9?
The lug width of the Longines Conquest L3.830.4.02.9 is precisely 21mm. This measurement is specific to this model and does not correspond to common standard widths of 18, 20, or 22mm, making a dedicated or bespoke strap solution necessary.
What is the best material for a strap on this Conquest?
For the Conquest L3.830.4.02.9, we recommend alligator in chestnut or cognac tones for formal wear, shell cordovan in burgundy for business contexts, or grained calf leather in black or blue for a sportive-casual interpretation. Vegetable-tanned leather develops a natural patina that elegantly contrasts with the steel case.
How do I change the strap on the Longines Conquest L3.830.4.02.9?
Strap replacement is carried out by removing the spring bars positioned in the lugs. Use a blunt-tipped tool (spring bar tool) to push the spring bar downward and then extract the strap. Insert the new strap by aligning the holes with the spring bars, then allow the spring bar to snap into position. Ensure both spring bars are fully inserted before wearing the watch.
Is there an aftermarket strap compatible with this model?
Yes, aftermarket straps for the 21mm lug width are available through specialized catalogues such as milanostraps.it. We recommend a bespoke solution to ensure construction quality and tactile properties consistent with the Conquest's level. The Casati Milano atelier creates custom straps using selected leathers and personalised finishing.
How long does a natural leather strap last on this watch?
A natural leather strap with vegetable tanning has an average lifespan of 3–5 years, conditioned by frequency of use and climatic conditions. Leather softens over time, developing a natural patina. With proper care (rapid drying after moisture exposure, avoiding prolonged sun exposure), longevity can be extended. Shell cordovan tends to last longer, resisting abrasion more effectively. Casati Milano offers an 18-month guarantee on all bespoke straps.