The Soltonix Headphone AM/FM Stereo Radio is using the power of the sun to power up the AAA battery located in the ear piece. It provides you around 19 hours of playback, which is pretty impressive. The Soltonix headphones is now available at ScientificOnline for $49.95.
When turned off, all power goes to recharging the batteries. One hour of charging in full sun gives 1-2 hours of night-time use while the fully charged battery provides over 18 hours of radio play.
Via UberGizmo
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