... battery 2.high performance ,CHEAP price 3.Sensitivity adjustable New Arrival Hand Held Metal Detector MD-3003B1 Hand Metal Detector Characteristics ... . Technical specifications1,Detection sensitivity:2.0mm stell ball2,Power supply:9V fold battery(6F22ND)3,Power consumption:220mW4,Current:more ... *85*15mm8,Package size :380*210*45mm(18PCS/Carton) New Arrival Hand Held Metal Detector MD-3003B1