Eco Drive Gn-4w-s-12g Manual - Citizen

This usually adjusts the Date . Rotate the crown to advance the day. Pro Tip: Avoid changing the date between 9 PM and 4 AM, as this can jam the internal gears.

Based on the code stamped on the back of your watch, your timepiece uses the Citizen Caliber E4-S (also known simply as Movement 4-S). citizen eco drive gn-4w-s-12g manual