Dual USB Charging, Longer Life, Wide Range + CHARGE TWO DEVICES AT ONCE : Charge two devices at once, including the latest generation Mobile phones, while on the road. + UNIVERSAL USB 2.0 PORTS: The USB 2.0 Ports are universal, so you can still charge all your devices with a 30-pin cable. And you never have to share the power with your passengers - just plug in and power up at the same time. + SMALL, COMPACT AND EASY TO USE: The low-profile design fits easily in your dash without getting in the way of your other controls.small compact and easy to use.integrated circuit assures short circuit protection. intelligent switching for over charger and over heat protection.The chargers comes Complete with Charging Indicator to show that your phone is charging Intex in 501 ducc is dual USB car charger and has following features:integrated circuit assures short circuit protection. Intelligent switching for over charge & over heat protection. Charge two devices at once. Small,compact and easy to use.