The Double Balancier Convexe has been redesigned to achieve a smaller size compared to its previous model. The titanium case maintains the signature convexe curve Greubel Forsey is known for, now measuring 42.5mm compared to 43.5mm. Twin balance wheels, both inclined at 30 degrees but in opposite directions, are connected by a spherical differential between 6 and 7 o'clock. In 4-minute sequences, it establishes the best running average to meet the performance, precision and reliability requirements that Greubel Forsey imposes on all its timepieces. On a textured rubber strap, this watch is limited to 88 pieces.