Few things are as frustrating as a misbehaving Casio watch. A frozen display, an unresponsive button, or incorrect timekeeping can disrupt your daily routine and make you question the reliability of a brand known for durability.
Whether you are dealing with a vintage digital model or a modern G-Shock, the solution is often a simple reset. This guide provides a comprehensive walkthrough for how to reset a Casio watch, covering specific models and the universal method for watches with hidden reset buttons.
Identifying Your Casio Model
Before you begin the reset process, it is crucial to identify your specific Casio model. The procedure for a Casio Databank is different from a standard digital watch or a rugged G-Shock.

Look for the model number, usually printed on the back of the watch case or displayed on the screen under a menu setting like "Settings" or "System." Knowing whether you have an Analog, Digital, or Hybrid model will determine which reset method is most effective.
Standard Digital Reset
Most basic digital Casio watches utilize a combination of buttons to wipe the memory and restore factory settings. This method is straightforward and does not require any specialized tools.
Follow these steps carefully, holding each button for a few seconds to ensure the command registers:

- Locate the "Mode" button and hold it until the display shows a colon or blinking time.
- Press the "Adjust" or "Light" button to cycle through the menu options.
- Find the "Reset" or "Initial" option, then hold the "Mode" button again to select it.
- Confirm the action by pressing "Adjust" and wait for the display to show the default time.
The Hidden Reset Button
Many modern Casios, especially G-Shock models, feature a small recessed reset button specifically for hard resets. This is the most reliable method to force a reboot if the watch is completely unresponsive.
To access it, you will need a paperclip or a SIM ejector tool. Gently insert the tool into the hole next to the watch face and press firmly. You should feel a distinct click, and the watch will immediately restart, clearing all user settings.
Specific Model Instructions
Different Casio lines have proprietary reset sequences that are more effective than generic methods. Here are the steps for two of the most popular series.

| Model Series | Reset Procedure |
|---|---|
| G-Shock (e.g., DW-5600) | 1. Press and hold both the "Adjust" and "Mode" buttons for 30 seconds. 2. Release when the screen flashes. 3> Use "Mode" to select "Reset" and "Adjust" to confirm. |
| Edifice (e.g., EQW-510) | 1. Hold down the "Search" button for 10 seconds. 2. Press "C" (Left Top Button) to initialize the reset. 3. The time will flash; press "C" again to confirm. |
When the Reset Fails
If a standard reset does not work, the issue might be battery-related rather than a software glitch. A weak battery can cause memory corruption that a simple reset cannot fix.
Carefully open the battery cover and replace the coin cell battery. Ensure the metal contacts are clean and free from corrosion. After installing the new battery, attempt the reset procedure again to see if the watch retains the correct time.
Factory Reset Warnings
Performing a factory reset will erase all user data, including alarms, stopwatch splits, and backlight settings. It is a powerful troubleshooting step, but it should not be your first action.
Try a simple restart or pulling the battery first. Only proceed with a full reset if the watch is completely frozen, or the buttons are unresponsive. Remember that any custom settings regarding time zones or display formats will need to be reconfigured after the process.






















