Strap for Fifty Fathoms Nageurs de Combat Stainless Steel / Black / Black Canvas

The lug width is 23mm. This dimension is critical for strap compatibility and is measured by removing the strap from the lug slots and calculating the width at the insertion point with a digital calliper. All our straps for the Fifty Fathoms are specifically calibrated for this measurement.

There is no single choice – it depends on your intended use. Alligator (noble leather with natural patina) is ideal for refined everyday wear and develops beauty over time. Shell cordovan offers extraordinary durability and visual depth. Vegetable-tanned calf balances softness with honourable ageing. Technical rubber guarantees maximum functionality in professional aquatic environments. The right choice is the one that reflects your usage style.

Carefully extract the strap from the lug slots using a professional spring bar tool, applying gentle outward pressure. Insert the new 23mm strap, aligning it perfectly with the lug slots and ensuring it is fully secured. If your strap features a deployante buckle, verify it is correctly engaged. If you are uncertain, consult a professional watchmaker.

Absolutely. A quality artisanal aftermarket strap with 23mm lug width is entirely compatible with the Fifty Fathoms. This is an excellent opportunity to personalise your timepiece with noble leather (alligator, shell cordovan) or technical materials suited to your lifestyle. Milano Straps provides verified straps for this measurement and collection.

A noble leather strap (alligator, shell cordovan) with vegetable tanning typically lasts 3–5 years of daily wear, with variability depending on sun exposure, humidity and frequency of wear. Natural leather ages honourably: it develops patina and softness. To maximise longevity, we recommend rotating straps, avoiding prolonged saltwater exposure and protecting against direct UV rays. With Casati Milano, you receive an 18-month warranty against manufacturing defects.