An ERBO pipe, or an Electro Respiratory Ballistic Optimization pipe.
"An Erbo uses the method of Hydrofuge to remove a large amount of smoke vapour."
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A battery powered marijuana pipe which infuses the smoke with water molecules and trapping all the harmful particulates inside. It doesn't require the user to suck on the stem, as it shoots a stream of filtered smoke twelve inches. It was featured in High Times magazine.
The ERBO pipe is a wonderful filtering devise.