Bremont · ALT1

Strap for ALT1-ZT

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
ReferenceALT1-ZT
FamilyALT1
MovementBremont caliber BE-54AE Additional 24 hours Hand (adjustable), hours, minutes, small seconds | date | Chronograph | chronometer
Year2015
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 ALT1-ZT

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The ALT1 ALT1-ZT, seen from the bench

The Bremont ALT1-ZT features the automatic caliber BE-54AE with chronograph functions, adjustable 24-hour hand and chronometer certification. The watch has 22mm lugs and provides hour, minute, small seconds and date indication. The movement offers aviation-specific functionalities with the additional time zone hand.

Frequently asked questions

What is the lug width of the Bremont ALT1-ZT?

The lug width (distance between attachment points) of the Bremont ALT1-ZT is 22mm. This measurement is critical for selecting a compatible aftermarket strap. Always verify this dimension before purchasing to ensure proper fit on the case.

Which strap is recommended for the Bremont ALT1-ZT?

The Bremont ALT1-ZT is a technical chronograph born from British aviation heritage, therefore it demands straps equally robust and performance-oriented. We recommend: military-spec NATO for versatility and lightness, Tuscan leather with vegetable tanning for functional elegance, vulcanised rubber for marine environments, alligator for those seeking luxury without performance compromise.

How do I change the strap on my ALT1-ZT?

The Bremont ALT1-ZT uses standard removable spring bars. Use a spring bar tool or thin screwdriver, place the watch on a soft surface, insert the tool into the hole beside the pin beneath the lug, lever the spring and slide the pin out. Repeat on the other side. Reverse the procedure to fit the new strap. Avoid excessive stress on the lugs to prevent case damage.

Are compatible aftermarket straps available for the ALT1-ZT?

Yes, Milano Straps offers a complete selection of handcrafted Italian straps in 22mm compatible with the Bremont ALT1-ZT. All options are made from carefully selected materials (Tuscan leather, high-density NATO, vulcanised rubber, alligator) and are ready for fast shipping with online customisation available.

What is the expected lifespan of a leather strap on an aviation watch like the ALT1-ZT?

A vegetable-tanned Tuscan leather strap typically lasts 3-5 years with daily use, extendable to 7-10 years with proper maintenance (regular cleaning and hydrophobic treatment). The Bremont ALT1-ZT, being an aviation instrument, exposes straps to humidity, sweat and temperature fluctuations; we recommend rotating between at least two straps to extend longevity. Vulcanised rubber lasts 5-7 years before hardening, synthetic NATO 7-10 years.

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