Detailed Notes on グランド セイコー 221
ぜんまいと水晶振動子を融合し、クオーツと同等の高精度を実現した、独創の機構スプリングドライブムーブメント。The GMT hand is both equally unobtrusive and nevertheless very easy to see. How can this be? Since it is shorter than the other hands and established underneath them, it never ever interferes