If you want to take your W-800H to the next level, here is the general process for a case swap.

One of the most famous Casio hacks is enabling the (CDT). Casio uses the same PCB (Module 3239) for various models but disables features on cheaper versions like the W-800H by using solder "jumpers".

Some W-800H models come with a "negative display" (light background, dark digits), but they are harder to find. Modders often seek out these specific modules (like those found in the W-800H-1AV) to swap into their custom metal cases for a stealthier, " Predator" look.

Once the timer is unlocked, you can often enable an auto-repeat function. While in timer adjustment mode (numbers blinking), pressing the Light button toggles auto-repeat on or off, though there is no visual indicator on the screen for this. Other Potential Modifications