Advanced GQ EMF-390
-It is an “ALL IN ONE” can measure electric fields of radio waves and magnetic fields of power lines.
-Provides a lot of information through its large multifunction display, it can be difficult to read for the many data provided, and also the use is not very intuitive.
-But the biggest problem is the accuracy of the readings, I do not want to consider it a video-game, because it can provide some useful info concerning the magnetic field, but on the electric radio field we are far.. far.. away !
-The idea could be interesting but honestly for this price there is much better.
MY PERSONAL OPINION: I think that if someone gift you.. then you can keep it and play for some time.