Breguet Marine Tourbillon 5577

Breguet's Marine Tourbillon 5577, reference 5577BR/G2/5WV, has a 42.5 mm rose gold case. The case measures 9.4 mm thick, and a sapphire crystal covers the slate dial. Inside is the self-winding calibre 581, with a peripheral oscillating weight that leaves the tourbillon and finishing fully visible through the sapphire caseback. Power reserve runs to 80 hours. The dial carries a small seconds display integrated into the tourbillon cage, and the hands are treated with luminous coating for legibility in the dark. A screw-down crown protects the movement, and the watch is fitted to a rubber strap with a rose gold folding clasp. Water resistance reaches 100 metres.