The Cobra CPI 290CH is a compact cup-holder design power inverter that converts your vehicle's 12 volt accessory plug, the cup-holder in your car, truck, or RV to a household AC outlet and dual USB ports. The unique design provides 200 watts continues and 400 watts peak household power plus dual 5 volt 2.1A ports turning your cup-holder in the vehicle to a power center. Power up or charge any devices under 200 watts, including small video games, most compact laptops. The USB ports allow simultaneous charging of tablets, mp3 players, smartphones and much more. Plus, it eliminates the use of bulky wall chargers with 5 volt outputs. Ideal for travelers and road enthusiasts.