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In 1796, Breguet built the first modern carriage clock. It is equipped with a Breguet overcoil – which offered major advantages over the pendulum balance it replaced, which was not adapted to being moved – glazed on four sides and of small dimensions. Some of the carriage clocks of the first half of the nineteenth century are veritable tours de force, endowed with many advanced complications such as grande sonnerie au passage, minute-repeating, perpetual calendar, phases of the moon and alarm, among others.