In 2009, 10-beat Calibre 9S85 surpassed the original, with high precision parts created using sophisticated modern technology assembled with skills with skills honed over the many decades of Grand Seikoβs watchmaking.Innovations to the precision controlling mainspring, the hairspring, and the escapement mean that the 9S Mechanical is not simply a revival of the 10-beat movement of the past, but an entirely new incarnation of this high-precision movement.In every detail, it is faithful to the βGrand Seiko Styleβ, the embodiment of the Grand Seiko design philosophy which started with the 44GS.