Our LED Solar Emergency Hanging Light Bulb works just like a regular 12-watt bulb when screwed into a traditional power source but when the electricity goes out, you can count on it to still be burning bright. The solar-powered battery in the bulb will automatically switch on, putting out the same 500 lumens of light from its bright LEDs. The light bulb has a tough ABS construction that is water and dust-resistant and the sturdy hanging hook screws onto the end, when needed. The energy efficient solar-powered light is perfect for hanging in a tent or using as an emergency light anywhere you need it. It will run for over eight hours on a full charge when it switches to emergency mode. Make sure you get a few of these emergency bulbs for your home and camping gear.