The Grand Seiko GMT Anniversary Edition celebrates the tenth year of the GMT timepiece. The GMT uses the caliber 9S66A, which is the same movement originally used a decade ago. It features striped bridges, 35 jewels, a frequency of 28,800 vph (4Hz) and a 72-hour power reserve. A circular blue titanium/tungsten blue rotor with cut-outs is visible through the clear caseback and is signed with the Grand Seiko logo. According to Seiko, the rotor has high elasticity which absorbs vibration and shock "ten times better" than brass. Functions include hours, minutes seconds date and second time zone (GMT). The bright blue dial has applied steel indexes, Dauphine-shaped steel hands and a gold-toned GMT hand.