Milano Straps
← Breitling

ITENDEFRES

SearchCart
Menu

Breitling · AVI

Strap for Breitling AVI AB3521U41B1A1

The Navitimer 8 B35 Automatic Unitime 43 Stainless Steel / Black / Bracelet takes 23 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

  • 4.8 out of 5 · 269 reviews
  • Ships in 1–3 working days
  • Worldwide shipping
  • 30-day returns
  • 12-month warranty on manufacturing defects
  • Hand-stitched in Milan

Lug width

23mm
Book a consultationAll Breitling
Not sure about the right strap, or can't find your watch?Message me on WhatsApp
Lug width23 mm
Case diameter43 mm
ReferenceAB3521U41B1A1 (aka: AB3521U4.BG85.189A, AB3521U41B1A1)
FamilyAVI
MovementBreitling caliber B35 Hours, Minutes, Seconds, World time | Date | Chronometer
Year2018
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

Standard spring bar · length 23 mm · Ø 1.8 mm double flange · industry standard, no brand part number

View →
Navitimer 8 B35 Automatic Unitime 43 Stainless Steel / Black / Bracelet — watch

What length do I need?

Measure your wrist with a tailor's tape or a piece of string, comfortably snug.

Wrist circumferenceLength (long side / short side)
15.0–16.4 cm120 / 70 mm
16.5–17.8 cm125 / 75 mm
17.9–19.0 cm130 / 80 mm
19.1–20.3 cm135 / 85 mm
20.4–21.6 cm140 / 85 mm
21.7–22.9 cm145 / 90 mm

The ready-to-wear strap is 115 × 75 mm. For a smaller or larger wrist I make it in the right length: order your length.

What I'm asked about the Breitling AVI AB3521U41B1A1

What strap size does the Breitling AVI AB3521U41B1A1 take?

The Breitling AVI AB3521U41B1A1 needs 23 mm between the lugs. It's the size I've been fitting on it for years.

Can the strap on the Breitling AVI AB3521U41B1A1 be changed?

Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.

Can I put a leather strap on the Breitling AVI AB3521U41B1A1?

Yes, in 23 mm leather. On a 43 mm chronograph I like box calf: it holds its shape and carries a substantial case.

Which strap do you recommend for the Breitling AVI AB3521U41B1A1?

A 23 mm box calf. I don't keep this size ready in the catalogue: I make it to measure. If you'd rather have something built on your wrist, the Casati atelier.

More Breitling in 23 mm

For changing the strap

Classic Strap and Bracelet Removal Tooltwo-tip spring bar tool→Milano Straps Premium Swiss Standard Watch Bucklestang buckle, steel or PVD→Leather Conditioner Milano Strapsnourishes and protects the strap→Casati Milano Rectangular Epsom Leather Travel Case — Brownfor the watch and spare straps→

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.

Request an appointment →

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

The atelier's website: casatimilano.com

Updated on · by Antonio Zichichi