Features:Smart surge protection via fuse mode, dual smart chips with high speed charging100% and high qualityLED indicator light; blue led light display screen3.1A r-high current output, with ligent distribution based on different devices, it adjusts the output on the basis of the saturability of battery momentarily, and charges your device at high speed while under strong protection. Fast charging only takes about 1.5hrs for Apple deviceIncredible quality, aluminum alloy rim, pure copper USB contact point, more bleSmart temperature reduction system diipates the heat of internal components of car charger, and keep it in a suitable temperature status for normal work and extending life-span.Monitor car battery voltage real-timely(When no device connected for charging); Display charging current when phone is chargingBuilt in overcurrent, overvoltage protection, support trickle charge and safeguard the charging statusWide Compatibility, suitable for most phones/tablet pc/PDA/PSP/MP3/MP4/, and other dial devicesDual USB ports, charge twe devices simultaneouslySpecification:Input Voltage: DC12V-24VOutput Current: 3100mAMaterial: Aluminum alloy+PCWork Temperature: 0~40℃Output Power: 120WOutput Voltage: 5VSize: 33*59mmPackage Includes:1 x Car charger