This energy efficient Ecosmart LED light bulb is equipped with a power failure battery that will automatically illuminate the LED bulb if the power fails. In this sense, this LED light bulb can function as a flash light in the event the power goes out. When in regular use, the battery will be charging, ensuring you will always have an option for light in the event of a sudden power outage. The battery works for 3 hours when not connected to power. Using only 8-watts of energy, this LED bulb produces 800 lumens (equivalent to a 60W incandescent bulb). Equipped with an integrated swith that allows you to select your preferred color temperature from Soft White (2700K), Bright White (3000K), True White (3500K), Cool White (4000K) and Daylight (5000K) and dimmable down to 3%, this LED bulb is suitable for any room in your home. Not suitable for use in enclosed fixtures. 10 year warranty. Start saving today with EcoSmart. Light. Your Way.