Siginal Frequency: 12khzdetecting depth1; 1.5-3.5mPower supply:DC12v(Built-in rechargeable battery)
Detection Depth: 1.5-3.5mSignal Frequency:6.5 KHzAudio Frequency:400 HZPower Supply:DC12V(Built-in rechargeable battery)
excellence in the design of the instrument, using high quality imported components.