Marine Tourbillon 5577 is a sports watch by Breguet.

This model was launched in autumn 2023. It is equipped with a tourbillon, an invention of the legendary french watchmaker Abraham-Louis Breguet.

The 42.5 mm case houses self-winding Calibre 581, an ultra-thin movement measuring just 3 mm thick, and comprising 330 components. This thinness is made possible by the use of a peripheral rotor. The balance beats at a frequency of 4 Hertz and has an impressive power reserve of 80 hours. To ensure it incorporates all the latest innovations, the calibre is fitted with a carriage in titanium and balance-spring in silicon. This material with multiple properties including resistance to both corrosion and wear, along with insensitivity to the influence of magnetic fields.