YOU certainly still remember the audio cassette in which the middle finger can be inserted and rotated at will. That's what inspired the concept gadget design Teaho & Hyejin Song Lee.
You can download the mobile phone battery charger is rotated around the fingers. This brilliant idea which promises faster charging socket is not available to charge the phone.
Based on the specifications presented, you must rotate the device as much as 130 times to get enough power to make calls for 2 minutes. If in standby (standby), the phone can last about 25 minutes.
Although there is a little flaw in the calculation of power generated, finger-powered mobile phone battery charger may be a solution because it minimizes the use of green electricity.
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