Strap for Symphonette L Diamond / Black

The lug width of the Longines Symphonette L2.306.0.57.0 is 11mm. This dimension is determined by the case proportions at 21.90mm and requires specific straps. To verify compatibility, measure the outer distance between the two lugs: it must correspond exactly to 11mm. Any measurement error will result in structural incompatibility.

Alligator remains the classic choice for proportions and formal elegance. Vegetable-tanned calf offers versatility and natural ageing. For a distinctive option, shell cordovan from the horse's posterior creates fascinating polishing effects. For sports or daily use, a NATO or structured rubber maintains the timepiece's dignity without formal pretension.

The strap is changed by removing the lug pins using a dedicated pin remover tool. Position the watch with the caseback towards you, insert the remover into the lateral holes in the case and gently lever to extract the pin. Repeat on the other side. Subsequently, insert the pins into the new 11mm strap and secure them in the case with precision. If you lack the proper tools, entrust this task to a professional service.

Yes, milanostraps.it offers a complete range of customisable 11mm straps: alligator, calf, shell cordovan and rubber. Each strap is crafted bespoke with choice of colour, thickness, initials and stitching thread. Casati Milano atelier additionally provides a bespoke service with 18-month warranty and WhatsApp consultation.

The lifespan of a leather strap depends on daily use and construction quality. An alligator or vegetable-tanned calf strap crafted by experienced artisans guarantees 4-7 years of intensive use before replacement. Natural ageing creates patina and character, not deterioration. Casati Milano's 18-month warranty covers manufacturing defects and ensures technical support throughout the strap's entire lifespan.