| Technical Specificationspower Supply: 8pcs 1.5V Batteries in SeriesEmitting Frequency: 6.99KHzSignal Frequency: 437KHzIndicators: Visual: Lever MeterIndicators : Sound:2"Speaker or Earphone(Earphone not included)Function: Disc: Ground BalanceControlsFunction: Distinguish Ferrous and Non-Ferrous MetalControls: Disc Control; Ground Balance ControlControls: Tune Control; Sensitivity controlControls: Discrimination ControlControls: Zeroing ControlOperating Current: 300mA MAX at MAX VolumeThe Detecting Depth (Max): 3-5 MetersSensitivity: 35cm for a US(25cent)quarter with meterSensitivity : Indication at min, discriminationExport Packing: 4PCS /Carton 0.1736CBMExport Packing : (84*31*17cm)Attachment : battery box and battery bag | 
