Technical Archive

Longines
Master Collection L2.759.4.92.0— lug 21mm

Longines Master Collection L2.759.4.92.0: 21mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Master Collection 42 Chronograph Stainless Steel / Blue / Bracelet

Artisanal Note

"This model requires a precise 21mm lug width to preserve the original sartorial balance."

Technical Specifications

Longines L2.759.4.92.0
Lug Width
21 mm

The essential strap measurement.

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Reference

L2.759.4.92.0

Movement

Longines caliber L688.5 Hours, Minutes, Small Seconds | Chronograph, Column wheel | Chronometer

The Heritage

The Longines Master Collection L2.759.4.92.0 is a 42mm chronograph with stainless steel case and blue dial, embodying Swiss watchmaking heritage since 1832. Powered by the L688.5 quartz movement with column-wheel chronograph mechanism, it offers 100 meters water resistance and refined proportions for everyday wear. The 21mm lug width is precisely calibrated to balance the case diameter without visual compromise.

FAQ

What is the lug width of the Longines Master Collection L2.759.4.92.0?

The lug width of the Longines Master Collection L2.759.4.92.0 is 21mm. This non-standard measurement is specifically engineered for the proportions of the 42mm case and must be respected precisely to ensure proper fit to the case lugs.

Which strap material is best suited for the Longines Master Collection L2.759.4.92.0?

Alligator is the optimal choice for this model: its regular grain pattern harmonises perfectly with the case's functional aesthetic. Premium alternatives include shell cordovan for superior durability and patina development, vegetable-tanned calf for those who appreciate natural ageing, and NATO straps in cotton or cordura for sporting contexts.

How do you change the strap on the Longines Master Collection L2.759.4.92.0?

Strap replacement is accomplished by removing the spring bars that connect the strap to the case lugs. Using a dedicated tool of approximately 1.8mm, press the spring bar from the rear until the strap is freed. Execute this operation gently on a soft surface to avoid damage to the case.

Are aftermarket straps compatible with the Longines Master Collection L2.759.4.92.0?

All straps manufactured with a 21mm lug width are compatible with the L2.759.4.92.0, provided they are constructed to precise tolerances. Casati Milano straps are specifically tested for this model and guarantee optimal fit and comfort without lateral play.

What is the average lifespan of a leather strap for the Longines Master Collection L2.759.4.92.0?

A quality alligator strap provides 3–5 years of daily wear; shell cordovan can exceed 7–8 years thanks to its inherent water resistance. Vegetable-tanned calf, more delicate, lasts 2–4 years. Regular maintenance and rotation with other straps significantly extend service life.