Coghlan's Dynamo Flashlight is a handy little device that uses a built-in wind-up handle to power itself. Bring it with you on the go or hook it up to your backpack on outdoor treks with the attached keychain.
Why choose this flashlight?
Next level flashlight: Nitecore TINI Mini Metallic Keychain Flashlight
Lumens are a measure of the total visible light emitted by a source and are the current standard for measuring the power of flashlights and lightbulbs. Wattage used to be the standard, but this unit only represents energy use, and modern energy-efficient LED lights can generate a lot of light with minimal watts.