saving, environmental friendly, and it is with many interface type. Metal outer case more tough, anti-slip foot pad more stable, vintage bearing, effortless and time-saving. Multi-function, can charge for cellphone, USB nightlight, USB fan, power bank. Manual crank generator, a helper under emergent circumstance. Small and exquisite, convenient to assembly, easy to carry, and not with internal power storage function., Manufacturer: Akfldms