GPK Systems Ac Adapter for Barnes & Noble Nook Wi-fi Color Digital the Simple Touch Reader Tablet Tab Input: 100 - 240 V (worldwide use) Output: 5V 2A 10Watt Service & Support 1 year warranty Products are CE/FCC/RoHS certified, tested by manufacturer to match and/or exceed specifications of OEM products. Designed exclusively for use with the laptops 100% compatibility with the original.