Havells 12W LED Emergency Bulb delivers cool day white light at 6500K for clear and comfortable visibility. It features a built-in Li-ion battery that offers up to 4 hours of backup during power outages. The inverter functionality ensures automatic lighting when the main power supply fails. Its shatter-resistant construction enhances durability and safety for everyday use. Over-charging protection helps safeguard the battery and extend its lifespan. With a standard B22 base, this pack of 8 bulbs allows easy installation and dependable emergency lighting.