Power Bank, Greaty&reg; 8000mah Ultra Compact Portable Charger Dual USB Port 2.1a 1a External Battery Pack Backup Flashlight with Premium Aluminum Shell Innovative Design: Finished with premium aeronautical fireproof material, feels sleek and smooth without leaving fingerprints and smudges. Touch-sensing switch simply turns on the LED indicators to check the battery level. Eco-friendly package is made from biodegradable materials. Lightweight and Efficient: Unique tear drop size of 1.5X1.5X3.7 inches, fits perfectly in your pocket and purse. Advanced IC layout plus unique ergonomic design maximize power storage, conversion and delivery,and feels comfortable in the palm. Optimal Charging:There are three USB ports and Patented I/O port design, auto charges when your device is plugged in; and auto detects and changes its charging speed unique to your device for fastest charging speed up to 2.1A &1A (4 times faster than a computer USB port). Safety Protection: Supports over-charged, over-discharged, over-voltage, over-current and short circuit protection, more safe to use. High Capacity: Genuine grade A Li-ion cell inside the battery 8000mAh and allows pass-through charging. Gives at least three full charges to iPhone 6 or 5s, at least two full charge to 6 Plus, Galaxy S6, Note 4 and other phones.