... reader is a combination of RFID (radio frequency identification) technology, bar code technology, image acquisition technology, and wireless ... , Micro SD slot, Charging port, USB1.1 host interface, RFID module antenna external PortKeyboard26 key NumericTouch ... °C—80°CPower supply4000mAh,3.7 DCV rechargeable lithium batteryParts and accessoriesStandard accessoriesHost machine, power adapter, Optional ...