Zenith · Pilot

Strap for Cronometro Tipo CP-2 Flyback Aged Steel / Slate

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter43 mm
Reference11.2240.405/21.C773
FamilyPilot
MovementZenith caliber El Primero 405B hours, minutes, small seconds | date | Chronograph, column wheel, Flyback
Year2018
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Pilot 11.2240.405/21.C773

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Pilot 11.2240.405/21.C773, seen from the bench

The Zenith Pilot Type 20 Extra Special 11.2240.405/21.C773 is an instrument chronograph born from aeronautical heritage, combining historical authenticity with contemporary performance. The 43mm stainless steel case features an oversized onion crown and engraved bezel, with a grey-blue sunburst dial and triangular indices designed for tactical readability. The El Primero 405B caliber, with column wheel, flyback mechanism, and 36,000 vph frequency, delivers Swiss chronographic precision and durability. The 22mm lug width ensures ergonomic pressure distribution for professional use and compatibility with aftermarket straps.

Frequently asked questions

What is the exact lug width of the Zenith Pilot 11.2240.405/21.C773?

The lug width of the Zenith Pilot 11.2240.405/21.C773 is precisely 22 millimetres. This specific measurement represents the optimal compromise between versatility and the tactical character of the model, ensuring balanced pressure distribution around the wrist. To verify the lug width of your watch, use a digital calliper positioned between the attachment pins of the original strap.

Which type of strap suits the Zenith Pilot 11.2240.405/21.C773 best?

The Zenith Pilot 11.2240.405/21.C773, given its instrumental vocation, pairs magnificently with alligator straps (micrometric grain, cool patina) or vegetable-tanned calf leather (develops warm patina over time). For a sporting and resilient aesthetic, Nylon NATO straps with tight weave and structured rubber straps remain timeless choices that emphasise technical character without competing visually with the dial. Alligator is the most conservative choice; calf is more versatile; rubber is ideal for high-stress environments.

How do I change the strap on the Zenith Pilot 11.2240.405/21.C773?

To change the strap, remove the watch from your wrist and, using a spring bar tool, gently press the attachment pin downward to release its internal spring. Extract the old strap and insert the new one by threading the pin through the lug holes on the case. Ensure the strap is perfectly aligned before releasing the pin. The operation takes seconds and requires no watchmaking expertise. Casati Milano offers professional change-out service if desired.

Can I use aftermarket compatible straps for my Zenith Pilot 11.2240.405/21.C773?

Absolutely. All 22mm straps are compatible with the Zenith Pilot 11.2240.405/21.C773, provided they meet adequate quality standards (minimum 4mm thickness, perfect stitching, refined finishing). Milano Straps offers an exclusive collection of 22mm straps in alligator, vegetable-tanned calf, shell cordovan and rubber, each tested for impeccable fit and superior durability. For a fully bespoke experience, the Casati Milano atelier creates custom straps with personal leather selection.

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

The lifespan of a natural leather strap depends on usage and maintenance. Quality alligator or vegetable-tanned calf, worn daily under normal conditions, maintains structural integrity for 3–5 years before replacement is advisable. Vegetable-tanned leather develops a protective patina that increases resistance over time, whilst alligator ages more elegantly. Avoid prolonged exposure to water and extreme humidity. Casati Milano's 18-month warranty covers manufacturing defects; actual longevity depends on your care.

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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Casati Milano · Via XX Settembre 15, Milan · by appointment only