The Detachable Hand Crank Generator Experiment Kit for Elementary and Middle School Physics Experiments is a perfect tool for children to explore physics and technology. With its detachable design, it is easy to carry and store. The hand crank mechanism allows for power generation. Not only can it charge devices like smartphones and tablets, but it also helps children understand the principles of energy conversion. Features -Color:Yellow -Material:ABS,copper -Size:8.00X5.00X4.50cm/3.14X1.97X1.77in -The detachable design of this hand-crank generator makes it easy to carry and store, making it a convenient tool for students and educators alike. -This is specifically designed for elementary and middle school physics experiments, as well as technological creations, providing a hands-on learning experience for children. -With its hand-crank power generation, this charging device is a great way to teach children about the importance of energy sources. -In addition to its benefits, this generator can also charge devices like smartphones and tablets, making it a practical tool for everyday use. -By using this hand-crank generator, children can gain a better understanding of the principles of energy conversion, helping them to develop a deeper appreciation for science. Package list: 1 x Set of Generator