Verizon ROCKDUALVPC Casio Car Charger with USB Port - Non-Retail Packaging - Black This unique and innovative design contains a hidden USB port that allows to charge two handsets at the same time The USB port is easily revealed with a slide of the button Rapidly charges most phone in 90 to 120 minutes The USB port can also be used to charge additional devices such as MP3 players, Bluetooth devices, digital cameras and many more