Introducing the Breitling Premier Heritage B15 Duograph 42

The Duograph is amongst the most mythical of Breitling vintage watches. This split-seconds chronograph was available from the mid-1940's until somewhere in the 1960's in various guises, all of which are considered to be highly collectible today. Breitling now brings back the Duograph as one of the flagship models in the Premier Heritage collection. Please welcome the Breitling Premier Heritage B15 Duograph 42!

The 2021 Breitling Premier Heritage B15 Duograph 42 is powered by the new caliber B15, a hand-wound movement with split-seconds (rattrapante) chronograph based on the self-winding caliber B03.

But wait, what is a split-seconds chronograph? The split-seconds chronograph, or rattrapante in French, is a more complicated and complex take on the traditional chronograph, which allows one to record intermediate times up to 60 seconds maximum. How?

A split-seconds chronograph has not one but two, superimposed, seconds counters (hands). In addition to the start-stop button at 1:00, and reset button at 4:00, a split-seconds chronograph also adds a new button. With the Duograph this third button is integrated in the crown; though a placement at 10:00 is not unusual. 

So, how does this work in practice? When starting a timing session with the button at 1:00, both seconds hands start running. Next, a push of the button at 3:00 stops one, whilst the other keeps running. Now there's two options; a push of the button at 4:00 allows the stopped hand to catch up with the one still running, whilst a push of the button at 1:00 stops the one that was still running, allowing one to read the time that passed between the two stops.

Sounds complex? It kind of is. Don't worry. Our staff is happy to demonstrate in person!

The Breitling Premier Heritage B15 Duograph 42 is housed in a case of 42mm with see-through case back. It is available in either stainless steel with blue dial, or red gold with black dial. Both versions are fitted with an alligator strap with folding clasp matching the case metal.

The Breitling Premier Heritage B15 Duograph 42 is available for pre-order in our eBoutique using the links below.

Scroll down for full technical details.

Technical Details Breitling Premier Heritage B15 Duograph 42

  • Reference number: AB2510201K1P1 / RB2510371G1P1
  • Case diameter: 42mm
  • Case material: Stainless steel / 18k red gold
  • Case back: Screwed-in, sapphire crystal
  • Water-resistance: 100m
  • Dial color: Blue / black
  • Strap material: Alligator leather
  • Strap color: Gold brown / black
  • Buckle type: Folding
  • Buckle material: Stainless steel / 18k red gold
  • Caliber: In-house manufacture B15
  • Winding: Manual
  • Power reserve: Approximately 70 hours
  • Warranty: 5 years