Areion&reg; 4000mah External Battery Pack (Power Bank, Portable Charger, Charging Station), Safe Lithium-polymer Battery, Fast Charge, Innovative Design and Compatible with Apple iPhone 6 Plus, 6, 5s, 5c, 5, 4s, iPad, Air, Mini, Samsung Galaxy S5, S4, S3, Note, Nexus, LG, HTC and Other USB Charged Devices Purple 4000 mah of capacity,full charge iphone 5s 2 times,full charge Samsung Galaxy S4 1.5 times. Great energy conversion - higher than 80% for better efficiency. The number of cyclic charging is as high as 1000. Four LED lights to display the remaining power, one press to check out, you will never miss recharging the battery. Great energy conversion - higher than 80% for better efficiency An intelligent protection system is built in to effectively prevent overcharging and short circuit. It is stable, reliable and safe. Charges via Micro-USB power wire (included) or AC adapter (not included). Input: 5V/1A (7-8 hours to charge via 1A adapter); Output: USB 5V / 2.1A. Package contents: External Battery Pack, micro USB cable, instruction manual.