This product is a small generator motor, it can exercise your students practical ability, train your students observation capability, thinking and analytical skills. Bright colors will appeal to students and let them learn with fun and enjoyment. This product is made of metal material, which is durable and lasting for use. Features -Color:Light Green -Material:Metal -Size:10.00X10.00X6.50cm/3.93X3.93X2.55in -Voltage:12V -Note:Without 3w bulb. - Small wind generator, train your student observation capability, thinking and cognition skills. - Made of metal material, funny and creative, which is durable and lasting for use. - Happy and easy to learn. The science small wind motor can exercise your students practical ability. - Learn scientific tips is a good gift for teens for early education, they can learn by playing the hand generator. - Nice teens and students small wind motor that you can have one and let you have a great fun from it. Package list: 2 x Small Wind Motor