Strap for Portofino Hand-Wound Monopusher White Gold / Slate

The lug width of the IW5151-03 is 22mm. This measurement is taken from the inner shoulder of the left lug to the inner shoulder of the right lug. It is essential to verify this measurement with millimetre precision before ordering a strap, as minor variations affect the fit.

For the white gold IW5151-03, an alligator strap with vegetable tanning is the ideal choice, creating perfect aesthetic balance with the metal. Valid alternatives include shell cordovan for dramatic colour, cognac calf for daily versatility, and cotton NATO straps for a contemporary approach.

Strap replacement requires removal of the spring bars using a dedicated tool or strap remover. Position the watch on a stable surface, insert the tool into the lug slot, apply controlled pressure to disengage the bars, and replace the strap. Verify that the spring bars click securely into the new strap.

Yes, any strap with a 22mm lug width is compatible with the IW5151-03, provided that the leather thickness and lug hole diameter are appropriate. We recommend thicknesses between 1.4 and 2.5mm to maintain visual harmony with the 45mm case.

Longevity depends on material and usage. An alligator strap with vegetable tanning lasts 4-6 years with daily wear; shell cordovan reaches 6-8 years due to its fibrous structure; calf leather has an average lifespan of 3-5 years. Vegetable-tanned leather develops a patina that enhances appeal over time.