1) Power Supply: 8pcs 1.5V Batteries in Series
2) Emitting Frequency: 6.99KHz
3) Signal Frequency: 437KHz
4) Indicators: Visual: Lever Meter
5) Sound: 2"Speaker or Earphone (Earphone not included)
6) Function: Disc: Ground Balanc
7) Distinguish Ferrous and Non-Ferrous Metal
8) Controls: Critical Sound Tuner;
9) Function Tuner
10) Operating Current: 300mA MAX at MAX Volume
11) The Detecting Depth (Max): 1.5-2 Meters
12) Sensitivity: 25-30cm for a US(25cent)
13) Export Packing: 4PCS /Carton 0.1736CBM
14) (63*32*85cm) 14.5kg/Carton
15) Color: Black