Havells 30W LED Emergency Bulb provides powerful cool day white light at 6500K for bright and clear visibility. It features an inbuilt Li-ion battery that offers up to 4 hours of backup during power outages. The inverter technology ensures automatic illumination when the main power supply fails. Its shatter-resistant design enhances durability and safety for everyday use. Equipped with over-charging protection, it helps maintain battery health and safe operation. With a standard B22 base, this pack of 2 bulbs allows easy installation and consistent emergency lighting.