Always beeps but works

It works enough good. It is beeping anytime but if it is about 10 cm from metal it starting vibrate, it works a little bit better without case. In the biggest sensitivity it all time show from 50 to 75 magnetic measures. It is such as real metal detector: it always beeping, but if it beeping louder, or vibrate this is a signal that detector finds metal.

VanyaP about Metal Detector and Spy Camera