Earin's tiny wireless earphones recharge while they're in your pocket

Bluetooth earbuds like Dre's new Powerbeats aren't actually "cordless." They still have a cable running from one bud to the other, which puts a limit on just how tidy and inconspicuous they can be. A group of former Sony Ericsson and Nokia engineers reckon they can go a step further: losing the connecting cable and headset mic in order to create two miniscule, music-dedicated buds with independent batteries and AptX-compatible wireless receivers.

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