UL Listed (UL File #E485248, Model #AST-MP473XXX) | 2500 mAh Lithium Ion Grade A Non-Recycled Battery | Red LED Indicator Light When Charging | Stainless Steel And Polyurethane Case | Magnetic Closure | Features A USB Output And Micro USB Input (Cord Included) | Output: 5 Volts/1.5 Amp | Charges Most Phones, MP3 Players And More! | Requires Your Phone’s Charging Cord To Charge Your Device. Approximate Size: 4″ W x 2 5/8″ H x 3/4″ D, Imprint Area: 2 1/2″ W x 1″ H