AT&T Universal USB Charger - 2.1 AMP Original Input: 100-240VAC, 50/60Hz, 0.5A Output: 5VDC 2.1 AMP Conforms to IEC 62301 Standards Charge your tablet or phone with the 2.1 AMP Universal USB Travel Charger from AT&T. This ultra fast charger features a compact cube design with foldable prongs for easy storage.