GOOQ 12V 2A US Power Adapter Wall Travel Charger for Microsoft Surface Windows RT Tablet PC (Surface RT wall charger) Special design for Microsoft surface RT Tablet PC. Intelligent IC chip inside recognizes a fully charged battery and automatically switches to a saver mode to prevent overcharging and short circuit. Small and lightweight for convenience, portability and storage Keep your device fully charged while at home, in the office or travelling Input: AC110~240V Output: DC 12V/2A