Following their unique heritage, Breguet launches the Marine Running Equation ref. 5887 in platinum and also in rose gold. This Grande Complication marks the start of a new era for the contemporary Marine collection and incorporates a tourbillon, a perpetual calendar and an equation of time in one timepiece. The equation of time is one of the rarest and most fascinating horological complications and it serves to display the difference between mean solar time, corresponding to civil or standard hours and minutes, and true solar time, meaning the actual solar hours and minutes.