... Waterproof Dustproof, anti-acid, anti-rustSound systemInternal magnetic stereo amplifier, 2*2w,Heat out putInternal 12V fans to achieve ... via the external rest button Sound systemAmplifier ;two stereo loudspeaker,magnetic-proof,net card,sound card,integrated display cardWorking ... modem, GPRS, Wifi4.3D barcode scanner. QR code reader5.Control System(cpu / memory / hard disk) 6.Card Reader: RFID ...