Strap for Avigation Chronograph Stainelss Steel / Silver / Bracelet

The lug width of the Longines Master Collection L2.622.4.71.1 is 21 millimetres. This technical specification is essential when purchasing a compatible strap: the new strap must have a nominal width of 21 millimetres to ensure correct assembly on the watch case lugs.

The optimal strap depends on usage context. For formal wear and durability, alligator leather in vegetable tanning, dark brown or black, is the classical choice that develops patina over time. Vegetable-tanned calf leather in black offers elegance with contemporary versatility. For sporting applications, a navy NATO cloth strap with stainless steel deployante buckle allows rapid changing and robust construction.

To change the strap, you must remove the spring bars from the lugs. Use a dedicated spring bar tool to gently push the bar downward, allowing the old strap to slide out. Once removed, insert the new strap ensuring the spring bar engages both side apertures of the case. Verify complete locking before wearing the watch.

Yes, any strap with a nominal lug width of 21 millimetres is compatible with the Longines Master Collection L2.622.4.71.1 lugs. It is advisable to verify that strap thickness does not interfere with the case; traditional leather straps have contained thickness and present no mounting issues. Avoid excessively rigid straps in the initial usage phase.

A high-quality leather strap (alligator, shell cordovan, vegetable-tanned calf) exhibits average durability of 3-5 years with daily usage, subject to regular maintenance. Longevity is influenced by ambient humidity, frequency of direct sun exposure and accidental drops. A NATO cloth strap offers superior longevity (5-7 years) owing to the absence of organic material susceptible to biodegradation.