The Breitling Navitimer B02 Cosmonaute is a captivating chronograph designed for aviation enthusiasts and space travelers alike. Housed in a robust 41 mm stainless steel case, it features a sleek black dial adorned with striking white chronograph counters, providing a stark contrast. The display includes a 24-hour time format and a date function seamlessly integrated into the lower subdial, color-matched with the dial. Noteworthy design details such as the Twin Jet logo in gold enhance its luxurious appeal, while Super-LumiNova ensures visibility of the hands, numerals, and indices in low-light conditions.

This timepiece boasts a bidirectional bezel integrated with a circular slide rule for various calculations, framed by a cambered sapphire crystal that features an anti-reflective coating on both sides. It has a thickness of 13 mm and a lug width of 47.09 mm. The caseback is screwed down and fitted with a sapphire crystal to view the intricate movement inside. Water resistance is rated at 30 meters, and the crown, which is not screw-locked but secured with two gaskets, adds to the watch's practical design. Complementing this sophisticated piece is a brown gradient calfskin strap that fastens with a folding clasp.

The heart of the watch is the sophisticated Breitling Manufacture Calibre B02, a hand-wound chronograph that is certified by the COSC for precision. This movement, featuring a column wheel and vertical clutch, measures 30 mm in diameter and 6.83 mm in thickness, made up of 273 components and operating at 28,800 vibrations per hour. It offers an impressive power reserve of about 70 hours, with chronograph functionality that tracks elapsed time in 1/4-second intervals and includes both 30-minute and 12-hour totalizers. Originally designed for astronaut Scott Carpenter, the Cosmonaute is a tribute to his historic 1962 orbital mission.