Material: Plastic 　 Color: See pictures 　 Description: 　 Mini Minor wind turbine generator LED Tools Teaching Sample Template 　 The world's smallest wind turbine, can turn 360graus at any angle, and will automatically face the wind direction. 　 Power generation will light the LED (2 blue LED and green LED 1) 　 LED low power consumption required, Blowing into his mouth or under a fan is enough to get the power to light up the LED, which is also can be used as a teaching experiment. 　 Size: See the picture 　 No retail package 　 Quantity: 1Pc 　 Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!! Package includes: 1Pc x Smallest Mini Minor Wind Turbines Generator LED Teaching Tools Sample Model