Enson Smart4000, 4000mAh Ultra-Slim Aluminum Portable External Battery Backup Charger Power Bank for iPhone 6,5, 5S, 5C (Apple adapters not included) 4S 4 3GS, iPod, Samsung Galaxy Note, Galexy S5,Galexy S4, Galaxy S3, Galaxy S2, Galaxy Nexus, HTC One X, One S, Sensation G14, ThunderBolt, Nokia N9 Lumia 920 900, Blackberry Z10, Sony Xperia Z; GoPro and More Mobile storage of electric energy is available. Comprehensively support more than 95% of brands mobile Phone, Pad, mp3, GPS, camera and other digital products. High-capacity battery cell 4000mAh is adopted. The number of cyclic charging is as high as 1000. An intelligent protection system is built in to effectively prevent overcharging and short circuit. It is stable, reliable and safe. Aluminum case can protect the cell better, and keep cooling better. The ultra slim thin & light design can easy to carry everywhere. Charges via Micro-USB power wire (included) or AC adapter (not included). Input: 5V/1A (4-5 hours to charge via 1A adapter); Output: USB 5V / 1A. Package contents: Enson SMART4000 External Battery Pack, micro USB cable, instruction manual.