The inverter with built-in independent radiating fan and additional USB charging port can be connected to many devices. The LED display will display the batterys input voltage and output voltage. The power inverter comes with free cigarette lighter and 2pcs battery clips, providing 300W continuous power, 4000W peak power (Please make sure that the total rated power of the connected devices is 300W).1. [Modified sine wave output] AC modified sine wave output has low interference, low noise and high load capacity, which will not affect the service life of the equipment2. [Quick Charge] Car inverter with smart digital display, 2 USB ports and power socket for Mobile phones, computers, laptop, breast pump, Nebulizer, Razors, medical rescue device, emergency equipment etc3. [Multi Protection] Built-in fuse can protect your device. The safe charging design can prevent