Ingenious! Provides two USB charging ports up-front, and two more charging ports for the back seats. So you can charge your phone or GPS while driving, and the kids can keep their entertainment powered in the back. Each port is rated at 2.4A for fast charging of tablets and power-hungry portable devices. A 1.8m cable connects the backseat unit with the cigarette lighter front unit. Suitable for use in cars and trucks.