Battery driven Wind-Generator with LED and Switch Students with this construction will be able to move a fan and light an LED through electricity (battery). Use the switch to power on/off the circuit. For its construction, the use of a screwdriver and scissors is required. wind turbine fan radius 10.5cm Wind turbine stem height 25cm – Total MAX HEIGHT: 37cm Base dimensions 16cm x 9.5cm This product is not ready, you will build it yourself. There are all the materials needed to make your build. glue is not included.