Strap for Saint-Imier Chronograph

The lug width (misura ansa) of the Longines Saint Imier L2.753.4.52.6 is 18 millimetres. This measurement is determined by positioning a calliper between the watch case lugs: measure the internal distance between the two lugs, not the external diameter of the case. An 18mm strap is the only compatible option for this model.

The ideal strap depends on intended use: for formal contexts, an alligator in black or cognac brown emphasises the watch's sporting sobriety; for daily versatility, vegetable-tanned calf develops a captivating aged patina; for practicality, a NATO in cotton echoes the watch's aeronautical heritage. A steel deployante with leather ensures adaptability and comfort. MilanoStraps offers all these options customisable in size and colour.

Remove the watch from your wrist and place it face-up on a soft cloth. Using a spring bar tool, gently lift the pin from one lug to allow the strap to slide outward. Repeat on the opposite side. To install the new strap, insert the pins into the strap lugs, aligning them with the case attachments, then press the pin into its housing until you feel the securing click. Verify the strap is firmly anchored before wearing the watch.

Yes, any strap with an 18mm lug width is compatible with the Saint Imier L2.753.4.52.6. Quality aftermarket straps, such as those handcrafted by MilanoStraps, often feature superior leather and customisation options (initials, custom lengths, thread colour selection) compared to original factory options. The key is verifying the lug width and construction quality to prevent damage to the delicate case lugs in stainless steel.

Leather strap durability depends on material type and frequency of wear. A quality alligator strap typically lasts 3–5 years with daily use, developing a desirable patina over time. Vegetable-tanned calf endures 2–4 years, displaying fascinating tonal variations. A cotton NATO strap lasts 5+ years without maintenance. MilanoStraps artisanal straps include an 18-month warranty against manufacturing defects; overall longevity increases with periodic care (cleaning, leather conditioning) and rotation among multiple straps.