Charges most phones, MP3 players and more! Features matt touch finish that protects against fingertips. Pass through technology allows power bank to charge device while being charged. PowerSafe Management guarantees short circuit and over-charging protection on power bank and devices. Requires your phone’s charging cord to charge your device. Blue LED indicator lights come on when charging. Double tap power bank to check battery level. 5000 mAh Lithium Ion Grade A non-recycled battery. Output: 5 Volts/2 Amp.