Bremont · ALT1

Strap for ALT1-B Bracelet

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter43 mm
ReferenceALT1Bbr
FamilyALT1
MovementBremont caliber BE-54AE Additional 24 Hour Hand (adjustable), Hours, Minutes, Small Seconds | Date | Chronograph | Chronometer
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

Straps for the ALT1 ALT1Bbr

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The ALT1 ALT1Bbr, seen from the bench

The Bremont ALT1 features the BE-54AE caliber with chronograph, adjustable 24-hour hand and chronometer certification. The movement offers indication of hours, minutes, small seconds and date. The watch has 22mm lugs for the strap.

Frequently asked questions

What is the exact lug width of the Bremont ALT1 ALT1Bbr?

The Bremont ALT1 ALT1Bbr features a lug width of 22mm, calculated to balance the 43mm case and ensure properly proportioned lugs. Measure between the inner spring bar posts to verify. All 22mm straps in the compatible collection will fit.

Which strap is most suitable for the Bremont ALT1 ALT1Bbr?

For a chronograph of this calibre, we recommend vegetable-tanned leather in Havana or cognac tones for everyday elegance, or a grey tempest NATO strap for authentic aviation aesthetics. Structured rubber for intensive technical use. Your choice depends on the desired balance between formality and tactical functionality.

How do I change the strap on a Bremont ALT1 ALT1Bbr?

Remove the spring bars using a dedicated spring bar tool. Place the watch face-down on a soft cloth, release the internal spring by pressing toward the centre, extract the bar, insert the new strap, and re-insert the bar until it clicks. This requires care; professional assistance is recommended if uncertain.

Is an aftermarket quality strap compatible with the ALT1Bbr?

Yes, all 22mm straps are compatible with the ALT1Bbr, regardless of brand. Compatibility is guaranteed by lug width. We recommend specialist manufacturers producing artisanal straps in Tuscan leather or shell cordovan—materials that age more gracefully than industrial production.

How long does a leather strap last on a watch like the ALT1Bbr?

A naturally dyed vegetable-tanned leather strap typically lasts 3–5 years with daily wear, depending on humidity and care. Shell cordovan extends to 8–10 years. Canvas NATO straps exceed 7–8 years. Longevity increases significantly when rotating between multiple straps and drying thoroughly after rain.

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