• hydralux LED bulb

    Fancy some liquid in your LED bulbs? Eternaled has you covered. The company's Hydralux-4 bulb, unveiled yesterday, is the first liquid-cooled LED. It's an innovation that supposedly makes the bulb more efficient than other LEDs, but it doesn't make the four watt Hydralux any cheaper—$34.99 for a single bulb is enough to turn off many a potential buyer.

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