Technical Archive

Breguet
Pilot 3815TI/HO/3ZU— lug 22mm

Breguet Pilot 3815TI/HO/3ZU: 22mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Type XXI 3815 Titanium / Black - Orange

Artisanal Note

"This model requires a precise 22mm lug width to preserve the original sartorial balance."

Technical Specifications

Breguet 3815TI/HO/3ZU
Lug Width
22 mm

The essential strap measurement.

Browse 22mm straps →
Reference

3815TI/HO/3ZU

Movement

Breguet caliber 582 Q/A Hours, Minutes, Small Seconds | Date | Chronograph, Flyback

The Heritage

The Breguet Type XXI 3815 Titanium is a chronograph rooted in French military aviation heritage since 1954. This 42mm titanium case houses the automatic Breguet 582 Q/A caliber with flyback function, allowing instant reset and restart with one thumb gesture. The dial features night-blue fumé finish with Arabic numerals and luminous indices. The 22mm lug width accommodates a wide range of leather and fabric straps designed for the titanium case weight.

FAQ

What is the lug width of the Breguet Pilot 3815TI/HO/3ZU?

The Breguet Type XX 3815TI/HO/3ZU is fitted with a 22mm lug width. This is the measurement to specify when purchasing any aftermarket or custom strap compatible with this reference.

What is the best strap for the Breguet 3815TI/HO/3ZU?

It depends on the intended use. For formal contexts, a matte midnight blue or tobacco brown alligator strap complements the smoked dial and titanium finishing. For versatile daily wear, anthracite grey smooth calfskin is the most coherent choice with the aviation aesthetic. For those seeking military authenticity, a two-tone nylon NATO strap is the most faithful to the Type XX tradition.

How do you change the strap on the Breguet Pilot 3815TI/HO/3ZU?

The strap is replaced using a spring bar tool—a flat-forked implement—to remove the spring bars that secure the strap to the lugs. The operation takes only a few minutes and requires no professional equipment, but to avoid any risk of scratching the titanium case, it is advisable to entrust the work to a watchmaker or the Casati Milano atelier.

Are there aftermarket straps compatible with the Breguet 3815TI/HO/3ZU?

Yes. Any strap with a 22mm lug width is physically compatible with the Breguet Type XX 3815TI/HO/3ZU. Milano Straps offers a selection of custom-made 22mm straps in various materials—leather, alligator, NATO, and rubber—crafted to quality standards appropriate for a watch in this category.

How long does a leather strap last on a Breguet Pilot?

A quality leather strap, on a 42mm watch worn regularly, typically lasts 18–36 months before stitching or the flex zone shows visible signs of wear. Lifespan depends on tanning quality, leather thickness, and exposure to perspiration and weather. Casati Milano straps are guaranteed for 18 months against manufacturing defects.

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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By appointment only · Milan

The atelier's website: casatimilano.com