Movement is the new Japanese manual-wind Grand Seiko in-house caliber 9S63 with 33 jewels, 21,600 vph and a power reserve of 3 days. It has an accuracy rate of +5 to -3 seconds a day. This is Grand Seiko's first manual-wind caliber in eight years. Functions are: hours, minutes, small seconds at nine o'clock, and power reserve indicator at three o'clock.