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The Power Step is a portable charger consisting of two parts: a pair of charging shoes plus a storage card to power a cellular device. The unit converts the kinetic energy a jogger or a runner produces into electricity and stores it in the card inserted into the shoes. When on-the-go and needing a power boost, the user can remove the storage card, and the card will transfer the stored energy into the user’s mobile device wirelessly. The Power Step enables quick storage, handy use and encourages active lifestyles: the more steps you take, the more battery power you generate.