Discover the science behind a real potato battery and power a digital clock! Zinc and copper electrodes create an electrochemical reaction to generate voltage. Convert the chemical energy stored in the metal strips into electrical energy. Learn how to connect a simple circuit. Experiment with various liquids like saltwater, fruit juices, or fruits like lemon, orange, and tomato, in addition to potatoes. A unique experimental kit that inspires young scientists. Includes a mini LCD clock with a stand to display time, month, and day. Features 2 buttons on the clock for easy time adjustment. Eco-friendly and lightweight, easy to use. Clock size: 66x32x11mm Cup size: 62x51x51mm How it works: The metal strips and potatoes create a simple battery that generates electricity to power the clock. Each potato acts as an electrochemical cell, converting chemical energy into electrical energy. Two potatoes are needed to generate enough power. The cell functions due to the chemical properties of the metals (copper and zinc), causing ions to move between the strips, creating an electrical current. The potato facilitates this flow while preventing the metals from touching.