Technical Archive

Breitling
Chronomat Evolution B1335611/A574— lug 20mm

Breitling Chronomat Evolution B1335611/A574: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Chronomat Evolution Stainless Steel / Yellow Gold / White

Artisanal Note

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

Technical Specifications

Breitling B1335611/A574
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

B1335611/A574

Movement

Breitling caliber Caliber 13 Hours, Minutes, Small Seconds | Date | Chronograph

The Heritage

The Breitling Chronomat Evolution B1335611/A574 is a dual-tone steel and yellow gold chronograph designed for professional pilots, originating from the 1984 Frecce Tricolori collection. The 43.70 mm case features signature rider tabs at 3, 6, 9 and 12 o'clock positions on the rotating bezel. It houses the automatic Caliber 13 movement with COSC certification, offering hours, minutes, small seconds at 6 o'clock, date and chronograph functions. The 20 mm lug width accommodates a wide range of aftermarket straps and suits leather, alligator or rubber options for varied wear characteristics.

FAQ

What is the lug width of the Breitling Chronomat Evolution B1335611/A574?

The lug width of the Breitling Chronomat Evolution B1335611/A574 is 20mm. This measurement is taken with a digital calliper between the lugs at the innermost attachment point, and is fully compatible with the wide range of 20mm aftermarket straps available at milanostraps.it.

What is the best strap for the Breitling Chronomat Evolution B1335611/A574?

For the Chronomat Evolution B1335611/A574 in steel and yellow gold, alligator straps in Hornback or Mississippiensis grain paired with a deployant clasp offer the most coherent match for the watch's character. Shell cordovan is an excellent alternative for those who prefer a smooth surface with noble patina. For sporting use, vulcanised rubber with micro-texture ensures grip and visual consistency with the Chronomat's aviation-sport DNA.

How do I change the strap on the Breitling Chronomat Evolution B1335611/A574?

Replacing the strap on the Chronomat Evolution B1335611/A574 requires a spring bar tool with a rounded tip to avoid scratching the lugs. The lugs are substantial and require care when inserting the new spring bar. A 20mm spring bar of suitable diameter for the case weight is recommended. If in doubt, Casati Milano offers technical assistance for fitting.

Are there aftermarket straps compatible with the Breitling Chronomat Evolution B1335611/A574?

Yes. Any strap with a 20mm attachment width is technically compatible with the Breitling Chronomat Evolution B1335611/A574. milanostraps.it offers a curated selection of artisan straps in leather, rubber, and nylon specifically proposed for this lug width, with the option of bespoke customisation through the Casati Milano atelier.

How long does a leather strap last on a Breitling Chronomat Evolution B1335611/A574?

The lifespan of a leather strap depends on the material and care routine. A high-grade alligator or shell cordovan strap, treated with suitable conditioners and not consistently exposed to moisture or heavy perspiration, will maintain its structural and aesthetic integrity for 3 to 5 years with regular wear. Vegetable-tanned leather straps develop a distinctive patina and can last considerably longer with proper maintenance. Casati Milano provides an 18-month guarantee against manufacturing defects.