Breitling Breitling - A4435910/B811 Chronomat Blackbird Big Date Brushed / Black

Chronomat Blackbird Big Date Brushed / Black

REF. A4435910/B811

Case

MaterialStainless Steel

Diameter43.7 mm

ShapeRound

CrystalSapphire

Case backClosed

Water resistance300 m

Dial

ColourBlack

Finishand the other for an all-polished steel finish. The same goes for the “Blackbird special” Pilot bracelet with its exclusive facetted profile. The color of the Blackbird dial greatly contributes to its excellent readability that is further reinforced by large hands and oversized luminescent hour-markers. This pursuit of functionality goes well beyond simply reading off the time. The calendar at 12 o’clock is composed of two separate indicators, one for tens and the other for units, driven by Breitling Caliber 44, chronometer-certified by the COSC.

IndexesStick / Dot Hands: Stick

HandsStick

Movement

CaliberCaliber 44

Typeautomatic

Reserve42 h

Explore caliber→

In Context

At 43.7 mm it is a large watch — well above this catalogue’s 40 mm median, and enough to dominate a narrow wrist. At 17.2 mm it is very tall, and sits high off the wrist. The case back is closed, so the movement stays out of sight, and the sapphire crystal will resist everything short of deliberate abuse. 300 m is a professional diving rating, far past any demand a wrist is likely to make of it.

The movement winds itself from the motion of your wrist. 42 hours of reserve carries it overnight, but not through a weekend in a drawer. At 28,800 vph the seconds hand advances 8 times a second.

A4435910/B811 stands on its own in this catalogue — no other reference here shares its base number. It pairs a black dial with a stainless steel case.