To find your exact official manual, look for a 4-character alphanumeric code on the case back (e.g., E111, H500, J810) usually surrounded by a small box. How to Set the Time and Date
Pull the crown out (Position 2). The second hand will stop moving.
20 to 30 hours of exposure may be required for a full charge.
: Many "GN-4W-S" models are radio-controlled. To manually sync the time, place the watch near a window with the 6:00 position facing the transmitter and hold the button at the 4:00 position for over 2 seconds. How to Set Your Citizen Eco-Drive
If your watch's second hand begins jumping in instead of ticking every second, the power reserve is critically low. The watch will still keep accurate time, but it signifies you have roughly 3 days of power left. Immediate exposure to bright light will resolve this and return the ticking to normal. 5. Maintenance and Water Resistance Care
This restarts the second hand and seals the watch case against water. For Chronograph / Multi-Dial Models
The second hand will stop. Rotate the crown to set the correct hour and minute. Pay attention to AM/PM alignment by advancing the hands past 12 to see if the date changes.
Citizen Eco-Drive GN-4W-S-12G is a robust, solar-powered timepiece known for its reliability and "set-it-and-forget-it" technology. While "GN-4W-S-12G" is a common case marking, the internal movement (caliber) number
With gentle pressure toward the case, rotate the crown clockwise to secure it. Make sure it is tightened firmly to maintain water resistance. 5. Troubleshooting and Maintenance
If you cannot access the manual immediately, here are universal steps for all Eco-Drive models: Instruction manual | CITIZEN WATCH Global Network
The fastest and most efficient way to charge. A full charge takes roughly 8 to 12 hours of direct sun.
Most models require pulling the crown out to the first click for the date, and the second click for the time.
