DURAGADGET's USA Home And Travel Wall Charger Plug with Micro USB For Asus Transformer Book T200TA This is a premium quality micro USB USA Wall charger Intelligent IC chip inside recognizes a fully charged battery and automatically switches to a saver mode to prevent overcharging and short circuit LED light, CE and RoHS certified, 1 metre long cable Safe to use with 110 volt to 240 volts with travel adaptor so you can take this on holiday with you can use all over the world The charger allows you to use your cell phone and charge your battery at the same time.