Security inspection: airport, prison, customs, railway, stations etc. MDT-3003B1 (HIGH PERFORMANCE HAND HELD METAL DETECTOR)FEATUREVery High SensitivityDetection of both Magnetic ... Charger(4~5 hours, option) APPLICATION Security inspection: airport, prison, customs, railway, stations etc.Security defense: government, court, police, company, ... able to provide OEM for customers Hand hold metal detector