Strap for Big Pilot’s Watch Annual Calendar Edition Le Petit Prince

The lug width of the IWC Big Pilot IW5027-01 is 22mm. This measurement is taken from the centre of one lug shoulder to the other, perpendicular to the lugs. It is essential to verify this dimension with a digital calliper before ordering a compatible strap.

Natural alligator is the classic choice for the Big Pilot in red gold: its characteristic grain and patina development create a sophisticated pairing that enhances the warmth of the red gold case. Shell cordovan with vegetable tanning offers a more understated alternative with extraordinary ageing characteristics. For daily wear, grained calf leather in cognac or tobacco tones represents an elegant balance between durability and refinement.

The strap is changed by removing the horizontal spring bars that anchor the strap to the lugs using a dedicated tool (spring bar tool). For the Big Pilot IW5027-01 with 22mm lugs, proceed with caution due to the weight of the case. The spring bars are typically easy-flip type, facilitating mounting. If uncertain, consult a professional watchmaker or Casati Milano atelier for installation.

Yes, any strap with a 22mm lug width is compatible with the Big Pilot IW5027-01. Milanostraps.it offers a selection of high-quality aftermarket straps in alligator, shell cordovan, calf and rubber, all customisable in dimensions, initials and stitching thread choice. Universal 22mm compatibility ensures complete freedom in material and design selection.

The lifespan of a leather strap depends on the material and usage. Natural alligator typically lasts 8-12 years with regular wear, thanks to the density of the hide. Shell cordovan, being more compact, can last 10-15 years or more whilst developing a splendid patina. Grained calf leather has a lifespan of 5-7 years. FKM rubber is more resistant to mechanical wear, lasting 7-10 years. Casati Milano offers an 18-month guarantee on all custom-made straps.