No need to be a pro to make it work and to update it (everything is explained in the instructions and it takes 5 min) .It is very simple and very small but very efficace.Pour the charge to be used making USB or cigarette lighter (included) but I use a plug for cigarette lighter power adapter (found at Darty for cheap) .In operation, I put it on the mirror, and it is almost invisible. In short, for the price and all its benefits, do not hesitate: go for it ...