Strap for Avigation Big Eye

The lug width of the Longines Heritage L2.816.4.53.2 is 20mm, a specific measurement determined by the proportion between the 41mm case diameter and the lug housing. This measurement must be strictly respected to ensure proper alignment and aesthetic harmony between the strap and the case.

The best strap depends on intended use and personal preferences. For classical elegance, we recommend alligator or shell cordovan with vegetable tanning in warm tones. For daily practicality, vegetable-tanned calf leather offers a naturally ageing patina that develops beautifully. For sports or humid environments, FKM rubber provides uncompromising resistance. Colour choice should reflect the dial: cognac or Bordeaux for blue dials, black or talc grey for dark dials.

The strap is changed by removing the elastic spring bars that connect the strap to the case lugs. Use a dedicated spring bar remover tool or a small flat metal bar, insert the tip under the spring bar while gently compressing it, extract the old strap, position the new strap and repeat from the other side. Avoid excessive force to prevent scratching the case.

Yes, any strap with a 20mm lug width is compatible with the Longines Heritage L2.816.4.53.2. Quality aftermarket straps, such as those made from alligator, calf leather, shell cordovan or technical fabrics, guarantee identical fit to the original strap, allowing conscious personalisation without compromising constructive precision.

The lifespan of a leather strap depends on tanning quality and usage. An alligator or shell cordovan strap with vegetable tanning, used with care and not exposed to constant humidity, can last 5-8 years or longer. Industrially tanned calf leathers have a slightly shorter lifespan (3-5 years). To extend strap life, remove the watch during showers, avoid prolonged humidity and periodically condition the leather with specific products.