Strap for Pilot Type 20 Ton Up Aged Steel / Slate / Strap

The lug width is 23 millimetres. This measurement is taken by positioning a ruler in the internal cavity between the metal pins soldered to the sides of the case. Never measure the external case surface. A 23mm strap is incompatible with watches featuring 20mm or 24mm lugs, so verification of this dimension is essential before purchase.

For this model, materials that maintain its tool-watch identity are recommended: dark brown alligator for a sophisticated appearance, burgundy shell cordovan for those desiring an evolved patina over time, vegetable-tanned leather for breathability in warm climates, or grey-blue NATO textile to emphasise its aviatory character. Selection depends on the intended use and personal aesthetic preferences.

The strap is secured by two spring bars whose ends emerge from lateral case holes. To remove it, gently push the bars inward using a spring bar tool, freeing the bar ends from the holes. The old strap then slides away. To install the new one, insert the bars into the holes and push until you hear a click. This operation requires precision but not sophisticated equipment.

Yes, the Zenith Pilot accepts any strap with a 23mm lug width, regardless of manufacturer. This means personalised artisan straps from specialised manufactures can be used without compromising mechanical compatibility or the watch's manufacturing warranty. The important factor is verifying that the lug dimensions are exactly 23 millimetres.

A leather strap's durability depends on material quality and intensity of use. A quality calf leather, with regular wear, maintains structural functionality for 18-24 months. Shell cordovan, being denser, resists for 24-36 months. Premium alligator offers an average of 20-28 months. Exposure to humidity, direct sunlight and perspiration accelerates ageing. Quality ateliers typically guarantee 18 months from manufacture, with the option to regenerate the strap without replacing the entire structure.