Technical Archive

Breitling
AVI A45330101C1A1— lug 21mm

Breitling AVI A45330101C1A1: 21mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Navitimer 8 Automatic Day & Date 41 Stainless Steel / Blue / Bracelet

Artisanal Note

"This model requires a precise 21mm lug width to preserve the original sartorial balance."

Technical Specifications

Breitling A45330101C1A1
Lug Width
21 mm

The essential strap measurement.

Browse 21mm straps →
Reference

A45330101C1A1

Movement

Breitling caliber Caliber 45 Hours, Minutes, Seconds | Date, Day | Chronometer

The Heritage

The Breitling AVI A45330101C1A1 is rooted in instruments designed for WWII RAF and USAAF fighter pilots. The AVI family—Aviateurs de la Chasse—reinterprets the 1953 ref. 765 AVI chronographs with historical accuracy and technical updates. The 41mm stainless steel cushion-shaped case features a barrel-shaped bezel and three-register dial. It houses the Breitling Caliber 45, a COSC-certified chronometer with hours, minutes, seconds, date, and day functions, guaranteed at ±4 seconds daily. Water-resistant to 100m with screw-down case back. Lug width 21mm.

FAQ

What is the lug width of the Breitling AVI A45330101C1A1?

The Breitling AVI A45330101C1A1 has a lug width of 21mm. This is a non-standard size that falls between the more common 20mm and 22mm, so it is essential to confirm this measurement before purchasing a replacement strap. Use a digital calliper to measure the internal gap between the lugs for an accurate reading.

What is the best strap for the Breitling AVI A45330101C1A1?

The most suitable materials for the Breitling AVI A45330101C1A1 are alligator leather in tobacco or khaki tones to complement the aviation aesthetic, vegetable-tanned calf leather for everyday wear with a natural patina, and a nylon NATO strap for those seeking historical fidelity to the military origins of the design. The final choice depends on dial colour and intended use.

How do you change the strap on a Breitling AVI A45330101C1A1?

To replace the strap on the Breitling AVI A45330101C1A1, you will need a fine-tipped spring bar tool. Compress the spring bars on both sides of each lug and slide the strap clear. Work on a soft surface to avoid scratching the case, and ensure the replacement spring bars are rated for the 21mm lug width before fitting the new strap.

Are there aftermarket straps compatible with the Breitling AVI A45330101C1A1?

Yes, there are artisan aftermarket straps manufactured specifically for the 21mm lug width of the Breitling AVI A45330101C1A1. Milanostraps.it stocks a curated selection in various materials and finishes. For a fully bespoke solution, Casati Milano crafts made-to-measure straps with individual leather selection and custom buckle or deployant clasp options.

How long does a leather strap last on a Breitling AVI A45330101C1A1?

A quality leather strap on a Breitling AVI A45330101C1A1 typically lasts between two and four years with regular use, depending on the material and care routine. Vegetable-tanned calf develops a personal patina but requires protection from moisture. Alligator withstands intensive daily use more effectively. Shell cordovan is the most durable option due to the density of the hide fibre. Periodic replacement is part of routine watch maintenance.