Suitable for most phones/tablet pc/navigator/PDA/PSP/MP3/MP4/GPS, and other digital devices *With LED indicator light; blue led light display screen,red light shows the number *Dual USB ports, charge two devices simultaneously *Monitor car battery voltage real-timely *Display charging current when phone is charging *3.1A super-high current output *Fast charging only takes about 1.5hrs for Apple device *Made of high quality material, durable and practical to use *Smart surge protection via fuse mode, dual smart chips with high speed charging *Built in over current, over voltage protection *Support trickle charge and safeguard the charging status *Smart temperature reduction system dissipates the heat of internal components of car charger Specifications: