Double USB Port Fast Car Charger 3.1Amp Features

• Double USB port fast car charger
• Charges 2 devices simultaneously
• Charge using your devices USB cables
• Suitable for most branded cellphones/tablets/GPS units and other devices with USB chargeable functionality
• Output voltage: 5V DC/ 3.1 Amp
• Input voltage: 12V DC-18V DC
• Intelligent chip prevents overcharging