Havells 8.5W LED Emergency Bulb delivers cool day white light at 6500K for bright and clear visibility. It features a built-in Li-ion battery providing up to 4 hours of backup during power outages. The inverter functionality ensures automatic lighting when electricity fails. Its shatter-resistant design enhances durability and safety for home use. Equipped with over-charging protection, it helps extend battery life and ensures safe operation. With a standard B22 base, this pack of 2 bulbs allows easy installation and reliable emergency lighting.