Technical Archive

Longines
Conquest L3.720.4.62.6— lug 19mm

Longines Conquest L3.720.4.62.6: 19mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Conquest 38 Stainless Steel / Champagne / Bracelet

Artisanal Note

"This model requires a precise 19mm lug width to preserve the original sartorial balance."

Technical Specifications

Longines L3.720.4.62.6
Lug Width
19 mm

The essential strap measurement.

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Reference

L3.720.4.62.6

Movement

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

The Heritage

The Conquest mounts the Longines L888.5 automatic caliber with chronometer certification and indication of hours, minutes, seconds and date. The model features 19mm lugs and is part of the Swiss brand's sports collection. The reference L3.720.4.62.6 identifies this specific version of the Conquest line.

FAQ

What is the lug width of the Longines Conquest L3.720.4.62.6?

The lug width of the Longines Conquest L3.720.4.62.6 is 19mm, measured from the inner wall of one lug to the opposite side. This non-standard width makes the model an excellent candidate for bespoke strap commissions.

Which strap material is best suited to the Longines Conquest L3.720.4.62.6?

Chrome-tanned calf and alligator leather are technically optimal: calf offers daily resilience and fine grain texture; alligator delivers pronounced surface character and patina evolution. For natural tannage aficionados, shell cordovan combines structural durability with intrinsic lustre.

How do I change the strap on my Longines Conquest L3.720.4.62.6?

Remove the spring bars connecting the strap to the lugs using a dedicated spring bar tool, avoiding contact with the case. Align the new strap's holes with the spring bars and press until they lock automatically in place.

Can I fit a third-party strap to my Conquest L3.720.4.62.6?

Yes. Any strap sized at 19mm lug width is compatible with the Conquest L3.720.4.62.6. Ensure the base width accommodates the lug height to prevent lateral tension that would degrade the buckle and case shoulders over time.

How long will a leather strap last on the Longines Conquest L3.720.4.62.6?

A quality leather strap (calf, alligator, shell cordovan) will perform reliably for 18–36 months under daily wear, depending on frequency, climate exposure and moisture. Chrome-tanned skins require replacement when the buckle begins separating from its base; vegetable-tanned leather develops evolutionary patina, extending aesthetic appeal.