Description: Fruit Energy Science: A wide variety of experimental materials can be found at home, including oranges, tomatoes, potatoes, apples, etc, which is for DIY fruit batteries, bringing kids fantastic experiences and fun.FunctionGreat for fun learning. Used in intellectual development, hands on ability, interest cultivation, parent child communication, interactive toys, etc.Easy to Operate: You only need to prepare fruits, and vegetables to assemble a battery to work. Made of metal, durable to use.Educational Toys: Through experiments, children can understand the mysteries and improve their hands on ability, and make your child more interested in scientific experiments.Note: It needs to be operated under the supervision of a teacher or an adult, suitable for kids over 6 years old. Specification: Material: Metal Size Chart: Package Size 20cmx14cm/7.87inchx5.51inch Package Includes: 1 SetFruit Battery Science Experiment Kit Note: Please allow slightly errors due to manual measurement and different monitors.