Levitating speakers are the novelty item of the past couple of years. You can find a new one on Kickstarter every month or so and Amazon has a collection of them for sale, some of which are shaped like the Death Star for an added cool effect. The magic, if you consider it that, is due to electromagnets that keep the speaker hanging in mid-air above its main station and without it falling.

At CES, LG will show off its own take on the levitating speaker: the PJ9. The announcement article isn't very clear on some details, but it lets us know that the PJ9 will have a battery that lasts 10 hours after which the speaker will drop down to charge wirelessly.

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