This dual fan portable evaporative cooler will plug into your cigarette lighter and cool 200 CFM (cubic feet/min)of air as much as 30 degrees. these are usually mounted on the seat beside the driver. Two or Three quarts of water will last for up to 2 to 3 hours, depending upon hunidity. This cooler uses less than 2 amps and will not affect your gas milage! This is best used for a one person cooler, as two are recomended if cooling is also required in the back seat. Worlds Smallest Cooler! 12 Volts DC: plug into a cigarette lighter, or a small Solar Panel! Doubles as a Home Humidifer or a Room Cooler Up to a 35 Degree Temperature Drop, in low humidity! Perfect for Volkswagens, Antique Cars, Trucks Boost a weak Air Conditioner in your Car or Home