1,Excellent rfid guard tour system 2,Waterproof &Durable 3,USB Communication 4,10 meters ... 101 PhysicalCompletely water-proof and shock-resist,built-in silicone layer,super imported aeronautical aluminum body ... *35*30mmWeight:165gRFID Checkpoint ModeEMIDPhysicalElectronic chip sealed in the PVC case,waterproof and shock-resist, ... Asset tracking etc... Competitive rfid guard tour control system