Solar panels thrive upon sunlight to function properly so why not start by using it on your head? This idea has been introduced by a United Kingdom-based Kickstarter campaign, aiming to provide communities with solar-powered headphones.
The headphones, known as the "Onbeat Solar Headphones," have a flexible strip of solar panels embedded where it will be exposed to ample amounts of sun's rays, assuming you will be wearing it outdoors. The solar panel, then, will be used to charge a pair of lithium-ion batteries located inside the ear cups, where there will also be a USB port on one of the ear cups for outputting electronically charges for electronic devices.
Exactly how much of a charge you'll be getting from such a small solar panel is still stated unclear, especially considering that the entire solar panel is not going to be exposed to the sun all at once (due to the curving shape around the head). However, OnBeat's creators have proclaimed that the solar cell has a surface area of 55cm³ with a charge capacity of approximately 0.55 watts.
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