Portable 12V to 220V voltage transformer for car use1、With 3 4.2A USB ports and 2 AC power sockets. Comes with a cigarette lighter, which can provide 200W continuous power and 400W peak power (please ensure that the total rated power of the connected equipment is less than or equal to 200W). The cigarette lighter cable can easily power the device. If the output power is higher than 200W, please use a clamp to connect the battery. 2、The cigarette lighter distributor hole can help you use the cigarette lighter device with another AC device at the same time, for example, you can use car audio and dash cam at the same time. 3、Two international universal AC power sockets, support three USB charger ports 4.2A to work at the same time, and can provide power for mobile phones, computers, laptops, breast pumps, atomizers, razors, emergency equipment, etc. 4、Built‑in fuse, safe charging design and cooling fan can prevent the car power converter from overheating, thereby saving power and energy. With overvoltage, overload, overcurrent, short circuit, undervoltage, overheating, and short circuit protection. 5、Compact size, light and compatible, very suitable for vacation, camping and work trips. It can be plugged into almost any vehicle with 12V power output, thereby providing charging opportunities anywhere.