1) Power Supply: 8pcs 1.5V Batteries in Series
2) Emitting Frequency: 6.99KHz
3) Signal Frequency: 437KHz
4) Indicators: Visual: Lever Meter
Sound: 2"Speaker or Earphone(Earphone not included)
5) Function: Disc: Ground BalanceControls
Distinguish Ferrous and Non-Ferrous metal
6) Controls: Disc Control; Ground Balance Control
Tune Control; Sensitivity control
Discrimination Control
Zeroing Control
7) Operating Current: 300mA MAX at MAX Volume
8) The Detecting Depth (Max): 1.5--3.5 Meters
9) Sensitivity: 35cm for a US(25cent)quarter with meter
Indication at min, discrimination
10) Export Packing: 4PCS /Carton 0.1736CBM (84*31*17cm)
11) Attachment: Battery box and battery bag