It works like any normal LED bulb when you have electricity. It is just better than a regular LED bulb because it has a rechargeable battery that kicks in if there is no power going into the lamp so you will have light even if there is no power.
This environment-friendly LED bulb has a long life span of up to 30,000 hours, 10 times longer than traditional bulbs. It saves energy up to 90%. It is easy to install. It is widely used in hotels, bars, corridors, supermarket.