Technical Archive

Zenith
Pilot 22.1930.681/31.C725— lug 20mm

Zenith Pilot 22.1930.681/31.C725: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Pilot Type 20 Lady Rose Gold

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Zenith 22.1930.681/31.C725
Lug Width
20 mm

The essential strap measurement.

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Reference

22.1930.681/31.C725

Movement

Zenith caliber Elite 681 Hours, Minutes, Small Seconds

The Heritage

The Zenith Pilot Type 20 Lady Rose Gold reference 22.1930.681/31.C725 features a 40mm 18-karat rose gold case with a contemporary interpretation of 1940s cockpit instruments. It is powered by the Zenith Elite 681 automatic movement operating at 36,000 vibrations per hour with a 50-hour power reserve, visible through the sapphire caseback. The manually pressed dial-up dial features a subtle grain texture for enhanced readability. The lug width is 20mm.

FAQ

What is the lug width of the Zenith Pilot 22.1930.681/31.C725?

The Zenith Pilot 22.1930.681/31.C725 is equipped with a lug width of 20mm. This dimension is standard for the model and requires a specific 20mm strap to ensure correct fit to the spring bars without lateral play or excessive tension on the retention systems.

Which strap is most suitable for the Zenith Pilot 22.1930.681/31.C725 in rose gold?

For a Zenith Pilot in rose gold, dark brown alligator (Havana) is the most coherent aesthetic choice thanks to its vertical grain that elegantly complements the reflection of the satin gold. Alternatively, a cognac vegetable calf offers a patina that evolves over time, or a navy NATO for those preferring a more marked retro sporty aesthetic.

How do you change the strap on the Zenith Pilot 22.1930.681/31.C725?

The strap is replaced using the spring bars, small spring pins positioned at the ends of the lugs. Using a spring bar tool, you compress the spring bracket inward to release the pins, then remove the old strap and insert a new one. The procedure requires precision to avoid damaging the spring bars, especially on a precious rose gold case.

Is there an aftermarket strap compatible with the 20mm lug width of the 22.1930.681/31.C725?

Yes, any strap structured for 20mm lugs is compatible. Milano Straps offers a wide selection of customizable straps (alligator, calf, NATO, rubber) in varying sizes and colors, shipped quickly and with warranty. The Casati Milano atelier also allows bespoke creation by appointment with personal leather selection.

How long does a natural leather strap last on a watch like the Zenith Pilot?

A quality leather strap (alligator or vegetable calf) has an average lifespan of 3-5 years with regular daily use. Longevity depends on factors such as ambient humidity, frequency of replacement, periodic maintenance, and type of processing. Milano Straps straps, made with premium leather and natural tannins, are guaranteed for 18 months and develop a noble patina over time, extending the perceived aesthetics even beyond functional replacement.

The next step

The right strap isn’t chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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The atelier's website: casatimilano.com