... MD-5008 Power: DC12V Signal frequency: 7kHz Gold Metal Detector MD5008 : Main features: 1,a balance between ... metals function; 3,operating system using the smart use of high-intensity ABC packaging materials, light weight, ... , 3.5 meters market signal frequency: 7 KHz 6,audio frequency: 400 Hz current work: 12 DCV ... " (alkaline) 8X1.5V 7, power consumption: 0.6 W Weight: 3.2 Kg This product using voice ...