Category: Wearables

Key Takeaways

1. The F-91W and A158WA models have a hidden feature that spells “Casio” on the display when a specific button is pressed, helping to verify authenticity.
2. The AE-1200, known as “Casio Royale,” has a diagnostic display test that checks the LCD segments, which can also help identify counterfeit watches.
3. G-Shock models with advanced features include hidden diagnostic modes activated by button combinations, allowing for self-tests and solar charging level displays.
4. Limited-edition models feature special backlights that reveal logos or images when activated, adding a unique visual element.
5. Some Casio watches, like the DW-5600, include little-known functions, such as an auto-repeat feature for the countdown timer, enhancing their charm and functionality.

Everybody enjoys a little secret, and Casio’s simple digital watches have a few surprises hidden within them. From secret diagnostic modes to unexpected display features, these “Easter eggs” can transform ordinary timepieces into topics of discussion. Just like traditional Easter eggs, they are not easy to find – you wouldn’t know they were there unless you press the correct sequence of buttons. Let’s explore some of the concealed features found in popular Casio models.

The F-91W and Its Hidden Message

One well-known Easter egg from Casio is cleverly disguised on the F-91W and its relatives. If you press and hold a specific button (hint, it’s the lower-right one), the display will momentarily spell “Casio” using its LCD segments. This secret screen is likely a way to verify authenticity. The classic A158WA (which uses the same module as the F-91W) can also perform this trick, along with the newer W-217H, which is pretty neat considering even Casio’s most affordable models have Easter eggs. In fact, Casio enthusiasts and collectors once relied on this to identify fakes – although counterfeiters soon learned how to replicate it.

The AE-1200’s Diagnostic Display

The popular AE-1200, affectionately called “Casio Royale” by fans, also has a hidden feature. By pressing and holding a specific trio of buttons (the two buttons on the left and the lower-right button together), the watch will enter a diagnostic display test. All segments on the screen will light up simultaneously, usually followed by a code number. If you think this is just for aesthetics, it’s actually an LCD test that checks if every part of the display is functioning correctly. This feature can help verify the authenticity of a module (a counterfeit might not show the sequence right). It’s a fun trick to watch your AE-1200’s world map and numbers all light up together before returning to regular timekeeping.

G-Shock Models and Their Unique Functions

Casio’s G-Shock line, particularly the classic square models, has its own fun quirks. Many G-Shocks with advanced features like a tilt sensor (for auto backlight) or solar power have special diagnostic modes activated through three-button combinations. For instance, on a GW-M5610 or GW-5000 (solar-powered G-Shock squares), one hidden combination will flash all LCD segments in a test pattern, while another displays the solar charging level (showing “8888” when light is detected). Another screen might present a puzzling code of letters and numbers, which essentially indicates the watch checking its internal systems. It’s a greatly simplified version of a car’s “check engine” diagnostics. Though these features aren’t used daily, it’s incredibly cool to know that G-Shocks can conduct a self-test.

Limited-Edition Models with Special Backlights

Not all Easter eggs are found in the numbers; some are hidden in the illumination. Over the years, Casio has launched various limited-edition models where a special image or logo appears when you activate the backlight. In collaboration models, a company logo or character might be printed invisibly on the dial, only visible under the electroluminescent (EL) backlight. For example, one Bodega x G-Shock edition shows a world map outline glowing red against the green EL light.

Casio’s hidden features extend beyond visuals as well. Some models offer extra functions that aren’t immediately apparent. For instance, the DW-5600 has a little-known auto-repeat function for its countdown timer (you can activate it by holding a button in Timer mode). This is a handy feature, but you’d likely never discover it without consulting the manual or online discussions. All these unique traits add an additional charm to Casio’s watches. Because sometimes, it’s not the features you use every day that make a watch stand out. It’s the surprises you find when you weren’t even searching.

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