Breitling · Top Time

Strap for Breitling Top Time SB21251A1C1X1

The Premier Top Time B21 Chronograph Tourbillon Shelby Cobra takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

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Lug width22 mm
Case diameter42 mm
ReferenceSB21251A1C1X1
FamilyTop Time
MovementBreitling caliber B21 Hours, Minutes, Small seconds | Chronograph, Column wheel | Chronometer, Tourbillon escapement
Year2023
CaseTitanium, Ceramic
Water resistance100 m

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 22 mm · Ø 1.8 mm double flange · industry standard, no brand part number

Premier Top Time B21 Chronograph Tourbillon Shelby Cobra — watch

What I'm asked about the Breitling Top Time SB21251A1C1X1

What strap size does the Breitling Top Time SB21251A1C1X1 take?

The Breitling Top Time SB21251A1C1X1 needs 22 mm between the lugs, usually 18 or 20 mm at the buckle. It's the size I've been fitting on it for years.

Can the strap on the Breitling Top Time SB21251A1C1X1 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 Top Time SB21251A1C1X1?

Yes, in 22 mm leather. On a 42 mm chronograph I like box calf: it holds its shape and carries a substantial case.

Which strap do you recommend for the Breitling Top Time SB21251A1C1X1?

A 22 mm box calf. You'll find it ready in the 22 mm collection. If you'd rather have something built on your wrist, the Casati atelier.

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