Breitling · Chronospace

Strap for Chronospace Quartz

Takes 24 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width24 mm
Case diameter48 mm
ReferenceA7836534C823139S
FamilyChronospace
MovementBreitling caliber 78 Additional 12 hours Hand (adjustable), Additional 24 hours Hand (adjustable), hours, minutes, seconds | date, day, perpetual calendar | Chronograph | alarm | power reserve indicator, chronometer
Year2010
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 Chronospace A7836534C823139S

Selected for the 24 mm lug width · workshop selection

All 24 mm straps →

The Chronospace A7836534C823139S, seen from the bench

The Chronospace features the Breitling 78 caliber with chronograph, perpetual calendar, alarm and power reserve indication functions. The movement offers dual time zone display through additional adjustable 12 and 24-hour hands, as well as date and day functions. The case is equipped with 24mm lugs.

Frequently asked questions

What is the lug width of the Breitling Chronospace A7836534C823139S?

The Breitling Chronospace A7836534C823139S features a lug width of 24 millimetres. This measurement, rare among mechanical chronographs, is a proportional consequence of the 48mm case diameter and the depth required to accommodate the Breitling Caliber 78. Correct measurement is achieved by inserting a digital calliper into the internal attachment holes of the case: the distance must result in precisely 24mm.

Which strap is most suitable for the Breitling Chronospace A7836534C823139S?

Black alligator represents the excellence aesthetic choice for the Chronospace A7836534C823139S: the natural geometric pattern of the leather dialogues magnificently with the satin-finished steel case, and alligator develops a profound patina over time. For actual operational environments, vegetable-tanned calf leather offers greater adaptability and breathability, whilst for flight operations FKM rubber straps remain tactically intelligent due to stability and tool-free change capability.

How is the Chronospace A7836534C823139S strap changed correctly?

Strap replacement requires a specific spring bar removal tool: a lever designed for watch removal allows lateral pressure against the pin terminals, releasing the strap from the case. Some owners prefer to consult a watchmaker for the initial change, especially if the original strap presents a very tight fit. Once the pin is removed, the new 24mm strap aligns with precision into the attachment holes.

Is a 24mm aftermarket strap compatible with the Chronospace A7836534C823139S?

Yes, any strap with a 24mm lug width is compatible with the Chronospace A7836534C823139S, provided that the overall width between the terminals is precisely 24mm. Italian artisanal straps, crafted bespoke with premium leathers (alligator, calf, shell cordovan), offer construction quality that equals or surpasses the original Breitling, with the advantage of customisation (initials, thread colour choice, leather tone).

How long does a natural leather strap last on the Chronospace A7836534C823139S?

A quality leather strap — alligator, calf, shell cordovan — typically lasts between 3 and 5 years under regular wear and conscious maintenance. Longevity depends on exposure to direct sunlight, water (particularly salt water), and the frequency of position changes on the leather. Exceptional quality alligator strap can exceed 7-8 years if rotated with other straps. The 18-month warranty provided by artisans such as Casati Milano covers construction defects during the initial eighteen months of use.

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