Product FAQ

How long is the distance it can detect?
Does it come with English Instruction manual?
It looks complicated. Is it difficult to use this high tech device?
I want to buy one for my girlfriend, is it a good idea?
What is the principle of this anti-spy detector in signal detection?
Is there vibration mode? I don't want let others know what I am doing.
Does it come with a battery?
What type of wireless signal can it detect?