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coolest-gadgets.com - 8/28/2008

H2O Desk Calculator

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Just when you thought that solar-powered desk calculators were the end all and be all of the device’s evolutionary branch, along comes a water-powered calculator that defies conventional wisdom. Runs on water – no need for a light source! Plain tap water powers this unique, H20 desk calculator! Add a few drops of water to the removable battery and insert it in the calculator for up ...

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Tabletop Water-powered Calculator
GEARFUSE — ... little, he’d go over to his magic water bottle, uncork it, pour the magic water into his glass and would go out to the porch for hours. I’d pull on his shirt and ask for ice cream and he’d reply “Go away. I’m calculating.” Now it all makes sense. Take the calculator , remove the battery, add a little magic water and voila! Up to three months of power before you have to add more. It’s a steal at $25, especially when magic water goes for $20 per 750ml these days. Link ( via )