The HD001 is a high performance Hand Held Metal Detector designed to meet the exact requirements of the security industry. Typical uses will include body search for offensive weapons in crowd control, airport and border security, checking parcels and letters for metal objects and anywhere that hidden metal needs to be detected. SPECIFICATION Power 9V Standard or Rechargeable Battery Operating Frequency 25KHz Operating Current <50mA Operating Voltage 9V Recharging Voltage 12V DC or 9V AC Operating Temperature -5 to +55 Net Weight 210g Dimensions 390mm(L)x65mm(W)x30mm(H) Out packing: 43*41*27cm Gross Weight: 9.9KG per carton.20pcs per carton