【This car fan for the back seat features automatic 12V/24V recognition with a smart chip and built-in fuse, ensuring universal compatibility and short-circuit protection for all types of vehicles.】 【It combines two USB charging ports and a 5-inch dual turbo fan with three adjustable speeds, allowing you to cool the passenger compartment while charging electronic devices.】 【Equipped with brushless motors, it operates extremely quietly even at full power, ensuring optimal acoustic comfort for all passengers, including infants and pets.】 【Installation is quick and tool-free thanks to an adjustable side clamp that securely attaches to most headrests (up to 0.5 inches in diameter), with a 55-inch power cable for flexible routing.】 【Made of durable ABS and black in color, this versatile fan is suitable for a wide range of vehicles (sedans, SUVs, vans, RVs, boats) and is ideal for family or business trips.