Strap for Saint-Imier Chronograph

The lug width of the Longines Saint Imier L2.752.5.72.7 is 20 millimetres. This measurement represents the distance between the lug pins and determines compatibility with aftermarket straps. Always verify that your chosen strap is designated for 20mm lug width to ensure proper fit and eliminate excessive play during wear.

For a watch of this aesthetic character—contemporary yet rooted in classical design—alligator leather represents the most elegant choice, particularly in dark tones (black, brown, burgundy) that amplify the prestige of the rose gold case. Vegetable-tanned calf leather offers tactile evolution over time, developing natural patina. For more sporting contexts, a NATO fabric in neutral tones maintains gravitas whilst offering versatility.

Strap replacement requires a spring bar tool for pin extraction. Place the watch on a soft surface; gently press the pin inward to release the lug, then extract the pin from both holes. Repeat on the opposite side. Insert the new strap by aligning the pins with the corresponding holes in the case and press until you hear a click. If you are inexperienced, an authorised Longines service centre can perform this operation with precision.

Yes, aftermarket straps with a 20mm lug width are fully compatible with the Longines Saint Imier L2.752.5.72.7. Verify that the width is exactly 20 millimetres and that the attachment system (pins or lugs) corresponds to your case. Online at milanostraps.it you will find 20mm straps ready for shipment, customisable and tested for compatibility. Casati Milano also creates bespoke straps with personalised consultation and an 18-month guarantee.

The lifespan of a leather strap depends on usage, leather quality and maintenance. A high-quality artisanal alligator or vegetable-tanned calf strap typically lasts 3–5 years with regular wear, longer if worn occasionally. Factors that reduce longevity: direct exposure to sweat, saltwater, prolonged humidity and excessive flexing. To extend life, dry the strap if wet, avoid prolonged sun exposure and rotate between multiple straps. An artisanal design philosophy also permits restoration interventions (clasp refurbishment, re-stitching) by specialist ateliers such as Casati Milano.