4 channel lcd dvr Advanced RTOS,Motion JPEG compression Support USB2.0 4CH ... ;Multi- language versions are selectable ;Built in 7 inch hidden LCD monitor,convenient for using (China Patent NO.200730174963.4);Applied ... ,PELCO-P,B01,SAMSUNGLanguageSimplified Chinese,Old Chinese, EnglishMonitor7 inch hidden LCD monitorSATA BackupYESSoftware UpgradeUSBPower Suplly12V/ 4A DCWorking Temperature-10°C~+50 ...