Description It is a DIY handshake electric generator toy, it can exercise your children practical ability, train your children observation capability, thinking and analytical skills. Wood colors will appeal to children and let them learn with happy. It is made of material, which is durable and lasting for use. Features - Color: Wood color - Material: Wood - Size: Approx. 7.00X5.00X5.50cm; 2.75X1.97X2.16in - Average voltage and current output: About 5V/100mA - Output power: on hand movement speed - Made of wood material, not easy to damage. A good choice for you. - Manual assembly model, which will help your child's developmental skills and learning . - Made from high grade material, it is a good gift for you or your friends' children. - Also, an experiment and teaching generator model, which will help your study in physics class. - Creative and intelligent model toy. It will not let you down. Made of wood material, not easy to damage. A good choice for you. Manual assembly model, which will help your child's developmental skills and learning . Made from high grade material, it is a good gift for you or your friends' children. Also, an experiment and teaching generator model, which will help your study in physics class. Creative and intelligent model toy. It will not let you down.