Water-Powered Calculator

You won’t ever have to buy any batteries or plug in any cords to use this LCD clock or calculator. Both work using nothing more than ordinary water. The secret is a patented revolution in technology that harnesses the energy of water molecules to provide a futuristic stream of pollution-free electrical current. Just pull out the hidden reservoir tubes, fill them from your tap, and (amazingly!) you’ll have enough power for two months of operation. 5.5" H x 3.6" W x 0.75" D. China.