| Technical SpecificationsPower Supply: 8pcs 1.5V Batteries in SeriesEmitting Frequency: 6.99KHzSignal Frequency: 437KHzIndicators: Visual: Lever MeterSound:2"Speaker or Earphone(Earphone not included)Function: Disc: Ground Balanc; Distinguish Ferrous and Non-Ferrous MetalControls: Critical Sound Tuner; Function Tuner ; Operating Current: 300mA MAX at MAX VolumeThe Detecting Depth (Max): 1.5-2 MetersSensitivity:¡¡25-30cm for a US(25cent)Export Packing: 4PCS /Carton 0.1736CBM(63*32*85cm) 14.5kg/CartonColor: BlackCertification : EMC Certification | 
