Bolkin S-105 12000mah High Capacity Portable Rechargeable USB Power Bank External Battery Charger Pack for Iphones, Ipods, Ipads, Samsung, Htc, Blackberry, Sony, Nokia, Psp, Mp3, Mp4, Laptops and More (golden) Capacity: 12000mAh with 18650 Li-ion battery cells. Battery Type: 18650 Li-ion battery. Sturdy: The external of the power bank is made of alumina alloy, which is safer and more sturdy than plastic. 2 x USB Output: 5V 1A ~ 2.1A, design for charging Phones and Tablets, Can charge 2 Tablets or 2 Smart Phones simultaneously at most. LCD screen lets you know exactly how much power is left Multiple security protection design: protection for overcharge, overvoltage, overcurrent, and short-circuit; The device will automatic shutdown when short circuit or overload output happened to avoid destroy the device and accident Stylish & portable design; 24/7 to provide instant power; PERFECT for long plane flights, road trips, or whenever you need to charge your mobile devices wherever you are