PACKAGING INCLUDES: You get 12 sets fruit battery science experiment kit, which include 48 pieces of copper sheets, 48 pieces of zinc sheets, 12 pieces of electronic clocks, 24 pieces of RGB LED, 48 pieces of wires, 24 pieces wires with clip, 12 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: 12 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.