The Citizen 0310 watch movement, manufactured from 1970 onwards, is a mechanical movement featuring an automatic chronograph. It encompasses 60 seconds, 30 minutes, and 12-hour functions, controlled by a pillar wheel. The movement also includes a flyback feature, allowing for instant reset and restart. The day function can be set using the reset-pusher in the crown position, with options for two languages. Additionally, the movement incorporates a quickset date function. Other notable features include the inclusion of a chronograph, automatic winding, and sweep seconds.