The hand-powered Coghlan's Dynamo Flashlight uses no batteries and contains two bright LEDs. Just crank it for 1 minute to get up to 7 minutes light. It's ideal for use when camping, in the car, at home for emergencies, on the boat, and more. It has 10 Lumens of light power, a positive feeling on/off switch, and convenient key chain clip. Coghlan's makes the outdoors more comfortable and enjoyable with over 450 accessories for camping, hiking, fishing, and RVing -- from cooking gear to first aid kits, insect netting, firestarters, tent repair, and more.