Features: Quality metal outcase, lightweight and portable, convenient and practical, can provide long service time. LCD digital display, you can see the data clearly. Adopts intelligent temperature control fan, with fine heat dissipation effect. Selected quality circuit board and intelligent control chip, with high reliability. Miltiple protections design, overload, high voltage, low voltage, over temperature, reverse polarity, short circuit, overcurrent, insurance are protected. 4 USB output ports design, perfect for powering smartphones, laptop, tablets, camping equipment and mobile-office equipment, and etc.. 12 types optional, 6000W/4000W/3000W, 24 V to 110 V, 24 V to 220 V, 12 V to 110 V, 12 V to 220 V, you can choose according to your demands.