Caliber 9SA5 _ A slim movement makes possible a watch that fits comfortably.

Remarkably, given its enhanced functionality, Caliber 9SA5 is slimmer than any existing Grand Seiko high beat movement. It is in fact 0.8mm or 15% thinner which allows the watch cases that house it to be slimmer and to sit more firmly on the wrist. This advantage is further enhanced by the new position of the crown which is lower and closer to the case back. This lowers the center of gravity of the watch and adds to the overall slimness of the watch when on the wrist.