Where is the place is best for receive solar energy in a human body? the answer would be at the top of our head, the nearest the better? Perhaps. A student at the Transylvania University of Brasov, Shepeleff Stephen developed a Bluetooth headphones, called the Q-SOUND, which charge themselves using the energy of the sun that beam to our head.
The Q-SOUND is a Bluetooth headset which could be used with any Bluetooth-enabled device such as digital audio player/MP3 player. It is not only can the user listen to their music, but he or she can also take phone calls from a Bluetooth enabled mobile phone. There is also a 3.5 mm jack included in this headset for in case Bluetooth isn’t available.
There are two removable rechargeable NiMH batteries with an electric capacity of 800mAh and operating voltage of 1.2V operate as the eccentricities storage. And a full charged headset is able to run for up to 40 hours. For Q-SOUND headphones, one hour of sun yields more than 2.67 hours of working at maximum volume selection.
Although Q-SOUND is only in conceptual stage, but I think this idea will eventually become a real product.