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.
The Grand Seiko GMT comes in two variations: a steel bracelet and a strap version. The bracelet version is 39.2 mm in diameter, has a 24 hour bezel and is water-resistant to 100 meters. The strap version is 39.5 mm in diameter, has a fixed bezel with no markings (the 24-hour ring is on the inner dial) and is water-resistant to 30 meters. Both cases are in stainless steel. Limited to 700 pieces on bracelet and 1,000 on strap. The price is $6,300 on strap and $6,700 on bracelet. (Ref. SBGM031, SBGM029)