Strap for Elegant Collection Automatic 29 Stainless Steel / Pink Gold / Diamond / MOP

The lug width of the Longines Elegant L4.310.5.88.7 is 20mm. This measurement is determined by the internal distance between the attachment lugs and remains constant across all examples of this reference. It is important not to confuse lug width with case diameter (29mm in this case): lug width is an independent dimension that defines strap compatibility.

For the Longines Elegant L4.310.5.88.7, alligator leather represents the most elegant solution, thanks to its fine and regular grain that dialogues perfectly with rose gold and stainless steel. Shades such as anthracite grey, dark brown or black create aesthetic equilibrium. Grain calf offers a more daily alternative, whilst shell cordovan guarantees a natural patina that develops over time. NATO fabric and rubber remain valid options for less formal uses.

To change the strap, use a dedicated spring bar tool to remove the lugs from the case. Insert the tool's tip into the lateral spaces of the lug attachment, apply gentle pressure to expand the internal spring, then withdraw the metal pin. Repeat the operation on the other lug. To install the new strap, align the extremities with respect to the lugs and reinsert the pins, verifying that they are securely locked. Never force: if the spring resists, reposition the tool correctly.

Yes, you can use any strap with a 20mm lug width compatible with your Longines. Quality aftermarket straps, crafted in alligator, calf, shell cordovan or fabric, fit perfectly onto the original lugs. Always verify that the strap has been constructed with precision: an incorrect width would result in difficulty during insertion or anomalous movement of the lug.

The durability of a leather strap depends on usage, storage and material. A high-quality alligator strap typically lasts 5-7 years with moderate wear. Grain calf has similar longevity, whilst shell cordovan, being more resistant, can last 8-10 years. Factors such as sun exposure, humidity and frequency of wear significantly influence longevity. To maximise durability, avoid prolonged water immersion, store the strap in a dry environment and allow the leather to breathe when you are not wearing the watch.