UL Listed Portable Charger with Key Ring, 1″ W x 3 ¾” H, Portable Charger With Key Ring, 2200 mAh Lithium Ion Grade a Non-Recycled Battery, charging red LED light, features a USB Output and Micro USB Input (Cord Included), Output: 5 Volts/0.8 Amp, charges most phones and MP3, requires your phone’s charging cord to charge your device, split ring attachment.