Intocircuit 5000mAh Dual USB Port External Power Bank Charger 5000mAh high capacity; 2 full charges to your iphone 4S/4G/3GS; 1-2 charges for Samsung Galaxy S3, or 2-3 charges for most mobile phones Ultra-slim design makes for easy one-hand gripping for righties, lefties and ambies. Brand New AAAA L-Polymer battery cell ensures reliability, safety; 1000+ recharge cycles over the life of the battery. Multiple safety protection mechanisms: protection against overcharge, overload, overvoltage, over-current, and short circuit. Dual USB ports allow for charging 2 devices simultaneously.4 LED indicators reveal the battery level; S5000 chargers via standard USB or 5V 1A AC adapter(not included). Package includes: Intocircuit S5000 External battery; 2 connectors for phones; 1 charge cable; 1 user manual