Main parameter:Power supply: DC12VShooting frequency: 6.99KhzSignal frequency: 437KHzVisual: Lever MeterIndicator: sound : 2 Speaker or earphone(earphone not included)Disc: Ground Balance ControlsDisc Control: Ground Balance controlTune control: sensitivity controlDiscrimination ControlZeroing controlWorking electric current: 300MA at Max VolumeSensitivity: 35cm or a US(25cent) Quarter with meterIndication at min, discriminationAccessories: Battery box and battery bagGross weight: 3.2kgColour: Black.Features:1.Good detection depth: 1.5-2m(max. detection depth)2.Strong pinpointing performanceCan penetrate the earth, the stone, the chinaware or other plastic and wooden materialwhich covered on the metal and find the metal exactly.3.Great discrimination 4. Easy operation5. Mainly function :a) Suitable to detect and distinguish metal buried in the earthb) Suitable for checking metal in food, fuel, and luggagec) Suitable for detecting underground pipesd) Suitable for mining and archeological digs6. Have the function to distinguish ferrous and Non-ferrous Metal.7. Adopt the intellectualized operation system8. Use the high strength material of ABS with light weight and long life-span 9. To distinguish if it's the sound of ferrous via the earphone. producing area:China