Dual Time Toggle: Jumpers also control the visibility of the Dual Time mode, allowing you to disable it if preferred. 2. Visibility & Aesthetic Modifications casio w-800h mod

What is a Casio W-800H Mod?

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: This is the most popular mod. By opening the case and using a soldering iron or wick to disconnect a specific jumper pad (usually labeled "J1") on the back of the PCB, you can unlock a hidden countdown timer and up to 5 alarms. Dual Time/Alarm Sound Tweak The most popular modification for the Casio W-800H