Extra've not bought the cheapest. You make a good impression from the outside, but the glow is very weak, so you need very good with sun eyes. If the room is dark, but this is no problem. Also it is not already, that in two out of three screwdrivers the Spizen are already canceled is. I have so far managed only one other, very cheap, voltage tester. So strong I'm not really. Therefore, I can not recommend the product so.
