Breitling · Cockpit B50

Strap for Cockpit B50 Titanium / Blue / Military / Pin

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

Lug width24 mm
Case diameter46 mm
ReferenceEB501019/C904/100W/A20BASA.1
FamilyCockpit B50
MovementBreitling caliber Caliber B50 Additional 24 Hour Hand (adjustable), Hours, Minutes, Seconds | Date, Day, Month, Perpetual Calendar, Year Indicator | Chronograph, Countdown, Flyback, Rattrapante | Alarm | Chronometer, Power Reserve Indicator
CaseTitanium

Spring bar

Swiss Standard universal spring bars

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

Straps for the Cockpit B50 EB501019/C904/100W/A20BASA.1

Selected for the 24 mm lug width · workshop selection

All 24 mm straps →

The Cockpit B50 EB501019/C904/100W/A20BASA.1, seen from the bench

The Cockpit B50 is equipped with the Breitling B50 caliber featuring chronograph, flyback and split-seconds functions, as well as a perpetual calendar and adjustable 24-hour indicator. The watch has a countdown and alarm, with 24mm lugs. The reference EB501019/C904/100W/A20BASA.1 represents a version of the model with a professional strap.

Frequently asked questions

What is the lug width of the Breitling Cockpit B50 EB501019/C904/100W/A20BASA.1?

The lug width of the Breitling Cockpit B50 EB501019/C904/100W/A20BASA.1 is precisely 24 millimetres. This measurement is specific to this model and is not compatible with 20mm or 22mm straps. To verify, position a calliper between the lugs: the inside-to-inside distance must measure exactly 24mm. It is not a standard dimension in the aftermarket, so it is essential to seek specialised suppliers offering dedicated 24mm straps.

What is the best strap for the Breitling Cockpit B50?

The best strap depends on your usage and aesthetic preferences. For formal elegance, genuine alligator (navy blue or dark grey) creates harmonious proportions with the titanium case. For daily versatility, Italian calf leather with vegetable tanning offers tactile comfort and naturally evolving patina. For intense sports or marine use, FKM Fluorocarbon rubber ensures salt-water resistance and flexibility at extreme temperatures. Military NATO remains the most economical and practical choice for those changing straps frequently.

How do you change the strap on the Breitling Cockpit B50?

The change is performed via removable spring bars positioned at the case extremities. You will use a spring bar tool (specific implement with two flat tips) to compress the internal hook of the bar, extracting it gently. Once the old strap is removed, insert the bars into the new strap's holes and clip them back into the case lugs, verifying they remain firmly seated. We recommend not forcing excessively to avoid scratching the titanium case. If uncertain, a professional watchmaker accomplishes the task in minutes.

Is an aftermarket strap compatible with the Cockpit B50 EB501019?

Yes, any aftermarket strap with a 24mm lug width is compatible with the Cockpit B50 EB501019/C904/100W/A20BASA.1, provided the internal width is genuinely 24 millimetres. Avoid purchasing 20mm or 22mm straps: although they might physically appear "compressible", they would damage the spring bars and compromise the case's structural integrity. MilanoStraps offers online artisanal 24mm straps in alligator, calf, rubber and fabric, customisable in measurements and stitching.

How long does a leather strap last on the Cockpit B50?

The lifespan of a leather strap depends on material, tanning method and usage. A quality alligator or calf, worn regularly but not exposed to excessive moisture, typically lasts 3–5 years in good aesthetic and structural condition. Factors accelerating wear: prolonged direct sunlight exposure, intense body perspiration, repeated fresh-water contact, aggressive detergent contact. Vegetable-tanned leather evolves aesthetically (patina) but becomes more delicate over time. An FKM rubber, by comparison, withstands 7–10 years under sports-use conditions. We recommend seasonal rotation of straps to extend overall longevity.

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