UL Listed (UL File #MH60964, Model #2641) | 2200 mAh Lithium Ion Grade A Non-Recycled Battery | LED Digital Display Of Charge Level Percentage | Features A USB Output And Micro USB Input (Cord Included) | Output: 5 Volts/1 Amp | Charges Most Phones, MP3 Players And More! | Requires Your Phone’s Charging Cord To Charge Your Device. Approximate Size: 3 1/2″ W x 3/4″ H, Imprint Area: 2″ W x 5/16″ H