The Citizen caliber G900 is a solar-powered perpetual calendar watch movement belonging to the G90* family. It features central hours, central minutes, a small seconds subdial at 3:00, and a central pointer date hand that also indicates the watch's mode. Additionally, it includes a GMT subdial at 7:00, which also serves as the alarm hour and minute hands. The movement incorporates a year indicator displayed by the hour hand, a month indicator displayed by the minute hand (depending on the mode), an am/pm indicator between 4:00 and 5:00, and a minute repeater function.