| MD-200A HAND-HELD METAL DETECTOROperating frequency: 20 Khz Weight: 272 g（including the battery） size: Length: 420mm width : 138mm height: 110mm handle measurement: 30X30mm Regulate the way: Manual Indicator: BZ , vibration motor LED light proves : LED red warning indicator lamp LED green insufficient indicator lamp of voltage of indicator lamp LED battery of power Battery: A 9V battery (suitable for working for 40 hours normally) Control: Circulation switch (ON, OFF, a sound of light or mode of vibration) | 
