Strap for La Grande Classique Automatic 25 Stainless Steel / Yellow Gold PVD / White

The lug width is 13 millimetres, measured horizontally between the two lugs of the case. This measurement is specific to this women's model and not a universal standard: straps of 12mm or 14mm will be unsuitable. To verify with precision, remove the current strap and measure the internal distance between the lugs using a digital calliper.

Alligator leather in vegetable tanning is the most elegant and durable choice: its regular texture enhances the case's minimalism and develops a patina that synchronises its ageing with the steel. Smooth calf leather in natural tones (beige, brown, black) offers daily versatility. For practicality, NATO straps in fine fabric or carefully crafted rubber straps are stylistically neutral and robust options.

Strap replacement requires extraction of the spring bars that connect the strap to the lugs. Use a dedicated spring bar removal tool to press the bar downward and slide the strap from its position. Insert the new strap by aligning the end with the centre of the lug, then reinsert the bar: you will feel a slight click when the bar returns to position. Avoid improvised tools to prevent scratching the lugs.

Yes, provided the strap has a 13mm lug width and appropriate length for your wrist. Quality aftermarket straps—such as those offered by Milano Straps—are tested for precise tolerances and often surpass original Longines straps in quality, thanks to the use of fine leathers and artisanal craftsmanship. Choose certified leathers (genuine alligator, calf, shell cordovan) to ensure durability and aesthetic coherence with the watch's value.

A superior-quality leather strap (alligator in vegetable tanning, full-grain calf) lasts an average of 3–5 years with daily use, provided regular maintenance: avoid prolonged water immersion, dry it after humidity exposure, and occasionally apply a hydrating balm. Vegetable tanning develops controlled surface creases (check pattern) that do not compromise structural integrity. Rubber straps last longer (5–7 years) and require less maintenance. Casati Milano's 18-month warranty covers manufacturing defects.