Pull the crown out (Position 2). The second hand will stop.

Many Citizen GN-4W-S-12G models feature a , which is essential for maintaining the watch's high water resistance. Before you can pull the crown out to set the time or date, you must unlock it.

This guide will help you decode your Citizen watch markings, locate the exact manual, and master the basic settings for your Eco-Drive timepiece. 1. How to Identify Your Citizen Movement Caliber

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).

This watch receives radio signals to correct its time and date automatically. To force a manual sync:

Do not place the watch too close to high-heat light bulbs (like halogen lamps), as extreme heat can warp the dial components or dry out lubricants. Troubleshooting Common Issues The Second Hand Jumps Every Two Seconds

The "GN-4W-S" designation generally implies standard everyday water resistance or light swimming capabilities. However, always verify the specific "BAR" or "WR" rating stamped on the dial or case back. Never pull out the crown while the watch is wet.

The biggest "pro" of an Eco-Drive is that it . It converts any light—sunlight or even your office desk lamp—into energy.

and navigate to the "Support" or "Manuals" section.

Avoid keeping the watch in a dark drawer or jewelry box for months at a time.

counterclockwise (or clockwise, depending on the caliber) to change the date window.

: Find a string like XXXX-XXXXXXX . The first four characters (before the hyphen) are your movement caliber .