4M Enviro Battery by Green Science

New in original sealed packaging If you like to build things with your hands, here is a kit you will love. Enviro-Battery uses natural materials like mud, lemons, and water to power a light bulb, a watch, and activate a music chip. Amazing, environmentally friendly science kit that includes detailed instructions so you can create many unusual batteries with fruit juices, vegetables, coins, utensils, and more! Learn the science behind the Power! Recommended for ages 8 and up!