Enviro Battery

The most unique non polluting energy sources you can find on Earth - the potato, salt water and mud. Be amazed at how they light up a bulb or a sound buzzer.

Contains: 3 zinc plates, 3 coppers plates, a potato buzz wire game, a light tower, a LED lamp with connection wires, 3 plastic cups, a sound chip with connection wire, an experimental record sheet, adhesive tape and detailed instructions.