Dorcy Rechargeable USB Dynamo Camping Lantern with Hand Crank and USB Cord, Green (41-4268) Recharges via USB or with built in hand crank so you have light even when the power runs out or in emergency situations Run time of 3.5 hours on high and 7 hours on low High or low brightness levels USB cord included Keep this lantern on hand or with your emergency kit for outdoor use or for use the unique crank function for emergency preparedness