When we thought we’ve seen it all when it comes to Greubel Forsey, then they keep rising the bar even higher. What we can only describe as the pinnacle of the art of watchmaking, brings the new Greubel Forsey GMT Quadruple Tourbillon. Robert Greubel and Stephen Forsey have chosen to revisit their second invention and to take it even further by combining it with their legendary multiple time zone display GMT. Available in a total limited edition of 66 pieces with 11 in white gold —just released—, the new Greubel Forsey GMT Quadruple Tourbillon features a case measuring 46.5 mm by 17.45 mm in thickness.