The V-Spec black car charger (cigarette lighter adapter) plugs into your car's 12V cigarette lighter socket. Charges your Samsung Infuse 4G (AT&T) cell phone and provides unlimited talk time while in the car. Enhanced internal circuitry to manage charging status and prevent over- and under-charging. Integrated electrical fuse to prevent damage to phone or battery. Extra long bungee cord for cars, trucks, SUVs and other vehicles. Metal plug-in tip and extra big contact springs are more durable and makes it easier to insert or remove charger from socket.