Features‎:‎Detect the voltage of car battery‎,‎ display by LED screen‎.‎Dual USB port‎,‎ output 3100mA‎,‎ can charge for two devices at the same time‎.‎Triple USB port‎,‎ output 3100mA‎,‎ can charge for 3 devices at the same time‎.‎Suitable for all kinds of mobile/iPad/GPS/PSP and the other electronic kits‎,‎ include Tablet of Samsung‎,‎ iPad and so on‎.‎Type‎:‎ Dual/Triple USB Car ChargerColor‎:‎ As the Picture ShowsOutput Interface‎:‎ USBInput Voltage‎:‎ DC 12‎-24V ‎(‎Error of plus or minus 0.2V‎)‎Output Voltage‎:‎ DC 5V ‎(‎Error of plus or minus 0.1A‎)‎Outout Current‎:‎ 3100mAWorking Temperature‎:‎ 0‎-40 DegreeCompatible Brand‎:‎ UniversalCompatible Model‎:‎ UniversalConversion Efficiency‎:‎ 95%Size‎:‎ 4cm x 5cm x 1.5cm/1.57‎''‎ x 1.97‎''‎ x 0.59‎''‎ ‎(‎Approx‎.‎‎)‎