USB wall charger socket is convenient and pratical, with wide compatibility, eliminating the trouble of finding a charger when needed. The charger is a dual USB port for fast charging, which can automatically match the charging voltage and current of two devices at the same time. Connect the USB data cable to the USB port in the socket and the other end to the mobile phone / tablet or other electrical devices. The charger supports an outpout of 5V DC 3A, 9V DC 2A, 12V DC 1.2A.