PYRUS Portable Power Bank 7800mAh External Battery Pack for Samsang iPhone iPad HTC-Black/Yellow HEAVY DUTY - WaterProof DustProof Portable Power bank, this rugged back-up charger can withstand falls SOS SIGNAL FUNCTION - The SOS function can help you getting the timely rescue when you are in trouble by transmit signal of SOS (Press the Light button and don't move until succeed) CREATIVE DESIGN - Perfect for campers, hikers, skiers, construction workers, and many other outdoor enthusiasts; Compact stylish design can fit easily in your bag, Comfortable touch and good hand feeling POWER INDICATOR - Bright LED indicator lights let you know how much power you have left,and the integrated power buttons allow you to only use your power when you need it Brand New and High quality batteries pack from PYRUS, sold by EPYRUS ONLY!