"X2" (2009)
What would you do if you are living in a condition where there is allocated electricity use in home? This portable cane contains a generator that charges the volts into portable battery as you role the wheel, allowing you to charge your mobile phone, Mp3 players, and laptops from charged battery. 'X2' is expressing the principle of using one energy which effects into two functions. While you spend your energy to walk, it can also generate electricity to charge your mobile devices.