1,Excellent rfid guard tour system 2,Waterproof &Durable 3,USB Communication 4, ... records3,USB Communication:no need to install USB driver,high speed data download.4,Power:3.6V lithium ... anodized coat,10 meters free fall without damage.Suitable used in harsh environment.Storage Capacity16M,60,000 recordingsCommunicationUSB Battery3 ... Asset tracking etc... Competitive rfid guard tour control system