Collapsible Hand Crank LED Lantern comes with 2 Lighting levels, can also be used as an Emergency Cell Phone charger, Recharges with dynamo power. The Ivation Flashlight Lantern adopts the principle of cranking for power by three-phase alternator for power generation. The power stored is used to charge the built-in lithium battery. The battery can be also fully recharged with the included cable from a USB port or a 5-volt AC or vehicle adaptor. This lantern comes in handy during power blackouts and camping trips.