The conception clearly alludes to the sustainable side of affairs by incorporating dual battery modes as an intrinsic part of the whole setup. The battery has two types; metal and black crack. when the metal battery comes into use, the ui is changed into echo mode. The battery system of Metal will correspond to an eco friendly mode with low energy requirement for functioning and maintenance. Mobile phone can also be easily recharged by a simple mechanism. Very interesting concept. 
Korean designer Jung-woo Choi. 
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Via: Coroflot
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