Breitling has done something it has mostly avoided with the Cosmonaute: made it permanent. The 24-hour Navitimer has reappeared over the years as limited runs and anniversary pieces, but on October 22 the brand added two hand-wound chronographs to the standing Navitimer collection, and the one that matters to collectors is the Navitimer B02 Chronograph 41 Cosmonaute. It is a core-collection model, not a limited edition.
The 24-hour idea, and why it exists
The Cosmonaute reads differently from every other Navitimer because its hour hand makes one full rotation a day rather than two. The dial is numbered to 24, so noon and midnight sit at opposite ends of the face and a single glance tells you which it is. That is not a styling choice. It traces to Scott Carpenter, who before his May 1962 orbital flight aboard Aurora 7 asked Breitling for a Navitimer he could read in the permanent neither-day-nor-night of low orbit. The watch that resulted went up with him and is generally credited as the first Swiss wristwatch worn in space. Reviving that exact function as a catalogue staple, rather than a commemorative, is the news here — HauteTime and Men's Journal both read the move the same way.
Case, dial and caliber
The B02 Cosmonaute is a 41mm stainless-steel case, 13mm thick, with a 47.09mm lug-to-lug span and the bidirectional slide-rule bezel that has defined the Navitimer since 1952. The dial is black with three silver counters in a reverse-panda arrangement, the gold Twin Jet logo at twelve, and the date set into the lower subdial. Water resistance is 30 metres — confirmed by the caseback, which reads AB0230 · 3 BAR.
Underneath is the hand-wound Manufacture Caliber B02, 273 components, beating at 28,800 vibrations per hour with a power reserve of roughly 70 hours and COSC chronometer certification. It is a column-wheel, vertical-clutch chronograph with 30-minute and 12-hour totalizers — an integrated hand-wound movement rather than a modular add-on, which is part of why the Cosmonaute sits at the top of this pair.
The second watch
The companion piece is the Navitimer B09 Chronograph 41, also 41mm steel and hand-wound, but a simpler proposition: hours, minutes, seconds and a chronograph, with no date and no 24-hour display. It runs the Manufacture Caliber B09 (244 components, around 70 hours, COSC), and comes in black or blue reverse-panda dials. Where the B02 Cosmonaute carries the orbital history, the B09 is the cleaner three-register Navitimer for buyers who want the slide-rule look without the complication.
Prices and availability
The B02 Chronograph 41 Cosmonaute is $10,600 on the brown calf strap (ref. AB0230211B1X1) and $11,000 on the steel bracelet (ref. AB0230211B1A1). The B09 Chronograph 41 is $7,900 on strap and $8,400 on bracelet, across its black and blue variants. Both are listed as permanent Navitimer models rather than limited editions, though at the time of writing breitling.com shows the Cosmonaute as "Notify me" in the US, so delivery timing is not yet pinned down.
What makes the launch worth noting is less the specification than the decision behind it: a function invented for a single 1962 spaceflight, kept alive for decades as a limited-edition curiosity, has finally been written into the standing catalogue.
Sources: HauteTime, Men's Journal, and Breitling.
