Strap for Portugieser Chronograph "150 Years" Red Gold / White

The lug width of the IW3716-03 is 20 millimetres. This measurement is determined by the case geometry and the curved lugs that characterise the Portugieser line. You can verify it by inserting a digital calliper between the case shoulders at the strap bearing point.

For the Portugieser in 18-carat red gold, alligator remains the premium choice: its geometric texture amplifies light reflection and develops a patina that dialogues with the ageing of the gold. Cognac-coloured shell cordovan or vegetable-tanned calf in tobacco represent excellent alternatives that enhance the warm tonality of the case.

Strap replacement requires extracting the spring bars from the lugs using a dedicated tool (strap remover or T-shaped tool). Position the watch upside down, gently compress the lower spring bar to release it, then remove the old strap and insert the new one by aligning the holes with the bars. Verify the fastening before wearing the watch.

Yes, any strap with a 20-millimetre lug width is compatible with the IW3716-03, provided the spring bars are standard (diameter 1.5-1.8mm). We recommend choosing artisanal straps that maintain appropriate visual proportions: the strap width should not exceed 22mm to preserve the elegance of the case.

Durability depends on material and usage. High-quality alligator and shell cordovan resist 3-5 years with daily wear, developing an appreciated patina. Vegetable-tanned calf lasts 2-4 years before requiring replacement due to lower fibre density. Wear is natural and part of the strap's aesthetic evolution.