This 20000mAh power bank from HBNS has a compact design with a good texture. Apart from looking good, it also provides durability. Easily fits into your bag to provide instant power. Powerful with long operation time for long flight, trip, or whenever you need to charge your mobile devices wherever you are. Built-in high capacity rechargeable battery . Powerful with long operation time, the USB output, more convenient. High efficiency of power conversion. Portable, practical and long cycle life. Safe and reliable, perfect for using on travelling and outdoor activities.