Greubel Forsey Invention Piece 2

The second Invention Piece showcasing the Quadruple Tourbillon mechanism at its heart. The two double tourbillon systems are configured head-to-tail and coupled by a spherical differential. Features a sub-dial at 5 o'clock with a red triangle indicating hours and a concentrically-configured rotating disc for minutes. Small seconds at 10 o'clock and power reserve indicator at 11 o'clock. Awarded the 2011 prize for 'Limited Edition Watch of the Year' at the World Watch Awards in India.