This Humvee Magic Bulb (Cool) by CampCo is a rechargeable LED light bulb that gives you 3.0 hours of illumination on a full charge. It charges from any 120VAC electrical source in about 4.0 hours by just screwing it into a light socket. The bright 280 Lumen output is dispersed in a 45 degree angle making it ideal for reading books or maps or working on the car, just to name a few possible uses. Put its included handle on and you can even use it as a flashlight. This version has a 6,000K cool white output. It's also available in 2,900K warm white.