Formex · Pilot

Strap for Pilot Automatic Black / Bracelet

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

Lug width22 mm
Case diameter47 mm
Reference1100.1.7020.100
FamilyPilot
MovementSellita caliber SW200-1 a hours, minutes, seconds | date
CaseTitanium, Stainless 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 1100.1.7020.100

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Pilot 1100.1.7020.100, seen from the bench

The Formex Pilot 1100.1.7020.100 represents the contemporary evolution of the Swiss aeronautical chronograph, a category in which Formex has built its technical reputation since 1960. This oversized 46.50mm case combines titanium and stainless steel, housing the reliable Sellita SW200-1 movement with hours, minutes, seconds and date functions. The 22mm lug width accommodates the bracelet securely, while titanium reduces overall weight without compromising resistance, essential for pilot wear or comfort-focused users.

Frequently asked questions

What is the lug width of the Formex Pilot 1100.1.7020.100?

The lug width of the Formex Pilot 1100.1.7020.100 is 22mm, a standard size for this family of robust chronographs. Lug width is measured as the internal distance between the two lugs of the watch case, not the case diameter. To measure accurately, use a digital calliper or ruler positioned inside the lugs. A 22mm strap will fit into the lug slots without force, ensuring harmonious aesthetics and secure wear.

What is the best strap for the Formex Pilot 1100.1.7020.100?

The optimal strap choice depends on intended use and personal aesthetic preference. An alligator leather with vegetable tanning in deep brown offers formal elegance and ageing patina consistent with the titanium case. A grey-blue NATO strap reinforces the original aeronautical theme. Black rubber represents the most technical and resilient solution, ideal for high-stress environments. All these materials are available in 22mm size from Milano Straps, with customisable buckle options.

How do I change the strap on the Formex Pilot 1100.1.7020.100?

Strap replacement on the Formex Pilot requires a spring bar tool to gently extract the metal pins securing the current strap. Position the watch on a soft cloth to prevent scratches. Insert the tool blade into the gap between strap and case, pushing lightly downward to release the spring clip. Repeat on both sides, then remove the old strap. Align the openings of the new strap with the lugs and reinsert the pins until you hear a click. Verify that the strap is fully secured before wearing the watch.

Is an aftermarket strap compatible with the Formex Pilot 1100.1.7020.100?

Yes, any strap with a 22mm lug width is compatible with the Formex Pilot 1100.1.7020.100, provided it features standard spring bar slots. Quality aftermarket straps, crafted from alligator, calf leather, NATO nylon or rubber, often offer superior aesthetic and tactile qualities compared to the original strap. Milano Straps curates a selection of 22mm straps specifically verified for compatibility with watches in this category. Before purchase, confirm your preferences for thickness and texture: some leather straps may require a deployante buckle or dedicated hardware.

How long does a leather strap last on the Formex Pilot 1100.1.7020.100?

Leather strap longevity depends on frequency of wear, tanning method and environmental conditions. A quality vegetable-tanned alligator or calf leather typically lasts 3–5 years with daily use, with progressive aesthetic ageing that enhances visual appeal. Constant exposure to perspiration, humidity and UV radiation accelerates wear. Leather preserved with natural waxes and regular maintenance—gentle cleaning, rapid drying after moisture contact—extends useful life. Rotating between multiple straps reduces individual load and slows deterioration. A damaged or worn 22mm strap is easily replaced; Milano Straps offers rapid exchange without watchmaking service required.

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