PDA Personal Digital Assistant 1) optional 1D laser, wifi, Bluetooth 2) optional rfid, gprs, camera 3) Standard ... USB, RS232 Personal Digital Assistant(PDA)1) optional 1D laser, wifi, Bluetooth2) optional rfid, gprs, camera3) 1900mAh, optional 3800mAh ... power supply, separate seat charge5 hours and aboveSupport functionsRFIDBarcode Scanner(1D)Camera LF:125k (ID) HF:13.56M(IC) (optional) ...