Power Supply: 8pcs 1.5V Batteries in Series
Emitting Frequency: 6.99KHz
Signal Frequency: 437KHz
Indicators: Visual: Lever Meter
Sound:2'' Speaker or Earphone
             (Earphone not included)
Function: Disc: Ground Balanc;
　 Distinguish Ferrous and Non-Ferrous Metal
Controls: Critical Sound Tuner;
Function Tuner ;
Operating Current: 300mA MAX at MAX Volume
The Detecting Depth (Max): 1.5-2 Meters
Sensitivity:　25-30cm for a US(25cent)
Export Packing: 4PCS /Carton 0.1736CBM
(63*32*85cm) 14.5kg/Carton
Color: Black