Strap for Saint Imier Moonphase

The lug width of the Longines Saint Imier L2.764.4.53.6 is 20 mm. This dimension is fixed regardless of the strap originally fitted. To verify it, use a digital calliper measured perpendicularly between the two upper attachment lugs. Any strap with a 20 mm lug width is fully compatible with this model.

For the L2.764.4.53.6, we recommend a strap in alligator or shell cordovan in vegetable tanning: these materials respect the classic identity of the watch and harmonise beautifully with the brushed stainless steel case. If you prefer a more versatile solution, a smooth calf leather in a dark brown or black finish remains the most practical and timeless choice. For summer wear, a navy NATO strap offers casual practicality.

The strap on the L2.764.4.53.6 is changed by unscrewing the spring bars with a dedicated tool. Position the watch with the lugs facing upwards, locate the small screws on the sides of the case, and unscrew them anticlockwise with a precision tool (spring bar tool or dedicated remover). Remove the previous strap, insert the new strap into the guide and screw again. If you are not confident, contact a professional watchmaker or Casati Milano's service.

Yes, the L2.764.4.53.6 is fully compatible with quality aftermarket straps if they feature a 20 mm lug width. milanostraps.it offers a wide selection of 20 mm straps in alligator, calf, shell cordovan, NATO and rubber, all customisable in sizes, initials and stitching thread. The straps are handcrafted and guaranteed for 18 months. Always verify that the strap is equipped with fittings compatible with the lug width measurement.

A quality leather strap (alligator, calf, cordovan) lasts approximately 3–5 years with daily wear and ordinary maintenance. Durability depends on climate (humidity accelerates wear), sun exposure (which fades colour), and rotation with other straps (which distributes load). Vegetable-tanned leather ages naturally, developing a patina that characterises the material over time. A NATO strap has similar lifespan but yields more easily to tearing. To extend strap life, avoid prolonged water immersion, apply a protective treatment periodically, and alternate with other straps.