Patek Philippe
Calatrava 3718A Ivory— lug 18mm

The lug width of the Patek Philippe Calatrava 3718A Ivory is 18 millimetres. This dimension represents the space available between the two lugs of the case where the strap is mounted. To verify the measurement, place a metal ruler perpendicular to the lugs and measure the distance between the inner shoulders of the case. A strap compatible with this lug width will have a width of exactly 18 millimetres.

For the Calatrava 3718A Ivory, the ideal strap depends on usage and aesthetic preferences. Alligator leather in shades of cognac, chocolate or black offers the classical elegance this dress watch deserves. Grained calf leather adds softness and can be offered in dark blue or burgundy for a sophisticated contrast. Shell cordovan represents the choice for those seeking leather of extraordinary longevity and that develops a patina over time. A NATO strap in organic cotton or a rubber FKM strap are more contemporary options for those unwilling to sacrifice daily versatility.

To change the strap on a Calatrava 3718A Ivory, you will need a specialised tool for removing the spring bars. Position the watch horizontally, insert the tip of the tool into the lateral groove of the suspension pin, exert gentle downward pressure to compress the internal spring, and slide the pin out of its seat. Repeat the operation for the second pin. Install the new strap following the reverse procedure, ensuring the pins are securely fixed in the lugs. If you prefer to avoid the risk of damage, consult a specialised professional.

Yes, numerous high-quality aftermarket straps compatible with the Calatrava 3718A Ivory are available, all with an 18-millimetre lug width. Milano Straps offers a dedicated collection of artisanal straps in alligator, calf, shell cordovan and other materials. It is important to verify that the chosen strap is equipped with standard-diameter spring bars and that the overall length is appropriate for your wrist. A high-quality strap, crafted with traditional techniques and noble materials, further enhances the aesthetic and functional value of a Patek Philippe.

The durability of a leather strap depends on the type of leather, the quality of craftsmanship and the conditions of use. A high-quality alligator strap can last 5-8 years with ordinary maintenance. Shell cordovan, thanks to its natural fibrous structure, can last 10-15 years, developing a patina that enriches over time. A grained calf strap has an average lifespan of 3-5 years. To prolong the life of the strap, it is advisable to avoid prolonged exposure to moisture, clean regularly with a soft cloth and periodically apply a leather-specific balm. Milano Straps supplies straps with an 18-month warranty against manufacturing defects.