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Bremont · ALT1

Strap for ALT1-Z Zulu Green

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

Lug width

22mm
22 mm strapsAll Bremont
Lug width22 mm
Case diameter43 mm
ReferenceALTIZDG
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

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Straps for the ALT1 ALTIZDG

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The ALT1 ALTIZDG, seen from the bench

The Bremont ALT1-Z Zulu Green is an aviation chronograph designed for pilots requiring absolute reliability at altitude. It features a 43 mm stainless steel case housing the Bremont BE-54AE movement, a chronograph caliber with adjustable 24-hour GMT function, chronograph minutes indicator, and chronometer certification. The black satin dial, bidirectional bezel, and luminescent hands ensure readability in critical conditions. The 22 mm lug width accommodates a wide range of strap solutions while maintaining visual balance with the case size.

Frequently asked questions

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

The Bremont ALT1 ALTIZDG features a 22mm lug width, determined by the distance between the spring bars secured in the casings holes of the 43mm case. This dimension accommodates a comprehensive range of bespoke straps without compromising visual proportions.

Which strap material do you recommend for this pilot chronograph?

Tuscan leather with vegetable tanning is the quintessential pairing for the Bremont ALT1 ALTIZDG. Moro or dark brown leather complements the black dial and develops authentic patina over time. For tactical applications, heavyweight cotton NATO or vulcanised rubber straps deliver durability and moisture resistance.

How do you change the strap on a Bremont ALT1 ALTIZDG?

Strap replacement requires a spring bar tool to compress and remove the bars from the case lugs. Position the tool beneath each spring bar, apply gradual pressure toward the case centre, and withdraw the worn strap. Repeat at the opposite lug. Installation of the replacement strap reverses this procedure.

Which aftermarket straps are compatible with the ALTIZDG?

The ALTIZDG accepts any strap with a 22mm lug width. Milano Straps provides bespoke solutions in vegetable-tanned leather, shell cordovan, perforated calf, NATO weave, and vulcanised rubber—all compatible and customisable to individual aesthetic and functional requirements.

What is the typical lifespan of a leather strap on a watch of this category?

A quality vegetable-tanned leather strap exhibits longevity of 4–8 years under regular wear (3–5 days weekly). Durability depends upon ambient humidity, frequency of wear, perspiration exposure, and maintenance protocols. Extended water exposure significantly shortens material lifespan. Patina development indicates natural ageing, not functional deterioration.

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.

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