Micro USB Retractable 12v Car Charger For Sony Ericsson Xperia X10 Retractable car charger cable extends to the length you need to recharge battery & power phone for virtually unlimited standby and talk time The wire is 100% retractable. Just push the retract button & the cable rewinds back into the plug for easy storage. Its tangle free wire makes for easy storing. With less than the size of your palm, it uses minimal space. An intelligent IC chip prevents overcharging. Works with most device with micro USB plug.