PACKAGING INCLUDES: You get 3 sets fruit battery science experiment kit, which include 12 pieces of copper sheets, 12 pieces of zinc sheets, 3 pieces of electronic clocks, 6 pieces of RGB LED, 12 pieces of wires, 6 pieces wires with clip, 3 whole sets to apply FEATURES: By completing the fruit battery science experiment project with your child, you can create your child's imagination, improve hands-on skills, increase scientific knowledge, and develop a love of scientific inventions EASY OPERATION: You only need to prepare fruits, vegetables or drinks to assemble a battery to work with led or electronic watches, such as: , oranges, potatoes, lemons, , , pears, pineapples, or salt solutions, etc APPLICATIONS: The fruit battery science experiment kit is used in intellectual development, hands-on brain, interest training, parent-child communication, interactive toys, etc ATTENTION: This fruit battery science experiment kit can only be applied by people over 12 years old, and experiments should be conducted under the supervision of teachers or parents. Material: Metal colour: As shown Package Contents: 3 set x science kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.