Portable Charger Lankoo 5000mAh External Battery Pack Card Power Bank Charger For iPhone Samsung all cell phones Unique: beautiful fashion design and scratch-proof printing process Surface: Matte finish coated Rubber oil and touched as smooth surface Capacity: 5000mAh rechargeable Li-Poly battery(2 times full charges to iPhone) Safty: 4 layers PCBA to protect against short-circuit and high temperature Intelligent: 4-LED power indicators and automatic charge, 5V 2.1A output for all smartphones and tablet PC