URPOWER 2600mAh Portable Power Bank External Battery Pack Backup Charger for iPhone 6, iPhone 5s, 5c, 5, 4s, 4, 3gs,Samsung Galaxy S4, S3, S2, Samsung Galaxy Note 4,Note 3, Note 2; HTC One, Evo, Droid Dna, Motorola Atrix, Droid, Google Glass, Nexus 4, LG Optimus and Other USB-charged Devices - Black A lightweight, unassuming solution to life's daily power needs The lithium-ion polymer, long service life,more safety. Capacity: 2600mAh,Input: 5V-1A,Output: 5V-1A. Compatible with all digital devices charged via USB port. Long lifetime: 18650 Lion battery, up to 1000 charge-discharge cycles.1 year limited warranty.