Citizen Eco Drive Gn-4w-s-12g Manual [top] Page

~2 to 5 minutes provides a full day of power; ~11 to 30 hours achieves a maximum, full charge from empty.

The time is correct, but the date changes at noon instead of midnight.

The Citizen GN-4W-S-12G is a high-performance, radio-controlled watch that showcases two of Citizen's most advanced technologies: Eco-Drive solar power and atomic timekeeping. It's a timepiece engineered for the modern user who values precision, sustainability, and functionality. citizen eco drive gn-4w-s-12g manual

If your chronograph hands don't return to zero, or the main time is slightly off even after setting, the watch needs a "Zero Position Adjustment." This is the hidden manual that most owners never find.

Your watch is powered by light. Before using it for the first time or if it has been in the dark for an extended period, expose the dial to a bright light source (like sunlight or a desk lamp). This will charge the internal secondary battery and get the watch running. ~2 to 5 minutes provides a full day

Rotate the crown counterclockwise (or clockwise, depending on your specific caliber) to change the date.

So, you’ve got a with the "GN-4W-S" marking on the back. It’s a classic, reliable piece of engineering, but if you’ve lost the manual, you might be wondering why the second hand is jumping or how to actually change the date without breaking it. It's a timepiece engineered for the modern user

The first 4 characters (the XXXX before the hyphen) are your movement caliber.

To help you get the most out of your Citizen timepiece, you may want to look into specific operational details or accessories. The following options can help you finalize your setup:

Your watch features Citizen’s proprietary Eco-Drive technology. This means it converts any light source—natural or artificial—into electrical energy to power the watch.

The Citizen Eco-Drive GN-4W-S 12G isn’t just a watch; it’s a masterclass in solar-powered engineering