Equipped with a GMT hand, this watch features Grand Seiko’s unique Spring Drive caliber, which combines the motive force of a mainspring with the high precision of a quartz watch. The second hand movement over the black dial, further highlights a glide motion that reflects the natural and
continuous flow of time itself.
The high-quality sapphire glass on the surface of the ring provides a strong sense of transparency, breadth and depth.
Exterior
外装: stainless
裏ぶた: screw back cover
ガラス材質: dual curve sapphire
コーティング: Inner non-reflective coating
ルミブライト: Available (needle, index, bezel)
ケースサイズ: Width 44.0mm Height 50.8mm Thickness 14.7mm
バンド幅: 21mm
中留: One-push three-fold method
腕周り長さ（最長）: 191mm
Movement
ムーブメント: 9R66
駆動方式: Spring drive automatic winding (with manual winding)
駆動期間: About 72 hours (about 3 days) at maximum winding
精度: Average monthly difference ±15 seconds (equivalent to daily difference ±1 second)
Functions
防水: Reinforced waterproof for everyday life (20 bar)
耐磁: can be
重量: 177g
その他: ・30 koku ・24-hour hand (dual time display function)
・Power reserve display function ・Calendar linked time difference correction function ・Rotating bezel (24-hour display)
・Screw lock type crown
