10400mAh Power Bank Pack Portable External Battery Charger for Selected Phone Models Huge Capacity, 10400mAh; Add 4-5 full charges or 40 hours of talk time to iPhone 5 / 4S / 4, 3 full charges for Samsung Galaxy S3, a full charge for iPad / iPad 2, or 400% + to most mobile phones' battery life Dual USB ports: charge one device with up to 2.1A output, or charge dual devices at 2.1A total max; Custom Android and Apple ports specially designed to charge Android and Apple products; Can individually or concurrently charge Android phones and iPhones at full speed; LED indicates charge level Slim & stylish design, 0.6 inch thick; Easily fits into your bag to provide instant power; Charge your devices anytime, anywhere; PERFECT for long plane flights, road trips, or whenever you need to charge your mobile devices wherever you are Reliable Lithium Polymer battery ensures high quality; 500+ recharge cycles over the life of the battery Package includes: BXT External Battery / 4 connectors for most phones / 1 spring USB power wire / 7*24 email support / 100% satisfaction GUARANTEED