... & distinguish metal 3,High sensitivity gold detector 4.deep detec Water Proof Search Coil Gold Metal Detector GPX-4500 Functions :After boot ... the same 5, the volume can be set from 0-100 6, the sound frequency is the same 7, metallic sound ... , English operation 13, the remaining power, you can display 0-100%, in the standby interface is divided into four cells of ...