... GPS,camera, RFID for options 3,WIFI, GPRS/GSM, Bluetooth interface handheld pos terminal/ POS terminal with GPRS/GSM/ ... , also with call feature. The new layout for the keyboard upgrade, the upgraded layout is more ergonomic, functional, and ... . Communication mode: Wi-Fi communication, GPRS / GSM communication, Bluetooth communication8. Open platform to provide the SDK software interface, customer ...