Omaker Premium Dull Polish Finish Surface Brilliant 15600mAh(Dual 2.1A Output and 2.1A Input) Dual USB Portable Charger External Battery Pack Power bank Why you need this power bank:Unique Premium Dull Polish Finish Surface with an Intelligent&Powerful&Efficient Heart. Enormous Capacity: Charges the iphone 6 about six times;the iphone 6 Plus about 3.5 times;the iPad Air more than once;the Galaxy S5 four times;the iPhone 5s over seven times and other smartphones multiple times;Recharges in 7-8 hours with a 2.1amp adapter (not included) and the included Micro USB cable. Intelligent technology:maximizes compatibility with Android,Apple or other devices by enabling charge speeds up to 2.1 amp with 2x 2.1A USB Outputs. Battery Type:Constructed with A+ Li-Polymer battery cells and build-in microchips to ensure safety use; 500+recharge cycles over the life of the battery. Intelligent power manage IC:Multiple protection system inside for safety;Designed for avoiding overcharge,overvoltage, overcurrent, and short circuit, CE, FCC, ROHS certification ensures reliability.Portable Charger: Compact design, Super portable, Suitable for a wide range of occasions, such as parties, BBQs, and outdoor activities like camping,mountain climbing, and picnics.