To those who often travel outdoors, owning a mobile power supply device will be of great help. This 200W DC 12V to AC 110V USB 5V Car Power Inverter Adapter is always at your service when you travel with it. It is capable of transferring DC 12V power into AC 110V output. From the 12-Volt outlet in your car or boat, the inverter will reliably power a wide variety of household AC products. Being widely used in all kinds of electrical apparatus, which voltage rating are AC 110V and frequency are equal to 50Hz, such as mobile telephone, portable computer, electric light, digital camera and TV, this 200W car inverter charger can also work in the state of ultrasonic sound, which can both greatly minish the bulk and weight and make the circuit work without noise. A really great portable device you should have!