Green Solar Power Radiometer Crookes Energy Spinning Vanes Windmill

The stronger the light, the faster it turns. If possible, place it on a window sill or other place with strong light.When you put the radiometer in the , the vanes will keep spinning.It is made of glass,so it is fragile. It is suitable for children over 13 years of age.It is a gift, we can send it to our friends or familyThey will love it!Put it in the office or the living room is very beautiful.Material:glasscolour:Transparent greenPackage Contents:1 x RadiometerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.