... .0 2.3.2''TFT touch screen 3.RS232, Ethernet, and USB HOST /Client 1.1 4.GPRS, WiFi (Optional) ... to realize fingerprint verification in the card.Low power consumption and long time for standby, special energy-saving design promised ... Temperature0°C-50°CHumidity20%-80%Audio formatMp3,WAV, VideoCommunicationRS232, Ethernet, and USB HOST /Client 1.1Battery4000 mAh Lithium-ion batteryPower/CurrentAC110 ...