Technical Archive

Longines
Heritage L2.809.4.29.2— lug 18mm

Longines Heritage L2.809.4.29.2: 18mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Heritage 1918 Al Hussaini

Artisanal Note

"This model requires a precise 18mm lug width to preserve the original sartorial balance."

Technical Specifications

Longines L2.809.4.29.2
Lug Width
18 mm

The essential strap measurement.

Browse 18mm straps →
Reference

L2.809.4.29.2

Movement

Longines caliber L615.2 Hours, Minutes, Small Seconds | Date

The Heritage

The Longines Heritage reference L2.809.4.29.2 is equipped with the L615.2 caliber featuring hour, minute, small seconds and date functions. The watch features a classic design of the Heritage collection of the Swiss brand. The movement ensures the essential time reading functions with date indication.

FAQ

What is the lug width of the Longines Heritage L2.809.4.29.2?

The lug width is 18mm. This measurement corresponds to the distance between the axes of the spring bars at the sides of the case. Do not confuse the lug width (the gap) with the case thickness itself.

Which strap is most suitable for the Longines Heritage L2.809.4.29.2?

Vegetable-tanned alligator is the primary choice for formal occasions, in Cognac or Bordeaux shades. For daily wear, smooth calfskin offers elegance with lower maintenance requirements. Fabric NATO straps are not recommended for this model, as they contradict its sartorial identity.

How do you change the strap on a Longines Heritage?

You must remove the spring bars on the sides of the case using a dedicated tool (spring bar tool). Extract the old strap, insert the new one by aligning the bars with the axes, and fasten securely. We recommend consulting a professional if you lack experience.

What is the difference between an original Longines strap and an aftermarket one?

An artisanal aftermarket strap allows superior personalisation (leather choice, initials, stitch colour) and often tanning quality comparable to or exceeding the original. Casati Milano offers an 18-month warranty. The original provides Longines warranty but less aesthetic versatility.

How long does a leather strap last on a Longines case?

With moderate use and correct maintenance (periodic cleaning with a soft cloth, protection from extreme humidity), a quality alligator or calfskin strap lasts 5–8 years. Vegetable tanning develops desirable patina over time. Factors such as perspiration and sun exposure accelerate wear.