Grand Seiko Watch Quartz SBGX063J. Seiko is a pioneer in the world of quartz watch making and Grand Seiko SBGX063 is the proof of that claim. The timepiece comes with 9F62 quartz calibre that is powered by a battery. The battery can run approximately three years before a replacement is needed. The watch is water resistant and protected from magnetic influences. A date window is positioned at the 3 o clock mark. Hands mark hours, minutes and seconds. Additional functionalities include solid screw case back and scratch resistant sapphire crystal glass with anti reflective coating.