... Power: 6F22ND 9V battery 3.Net weight: 350g MD300 Handheld Portable Metal Detector / ScannerFeatures:1, simple ... become in China are industrial enterprises, production enterprises Digital Electronics conventional security anti-theft equipment. Product parameters: ... (20 support / box, 7.4 kg / box)MD300 Handheld Portable Metal Detector / Scanner MD300 Handheld Portable Metal Detector / Scanner