Havells 12W LED Emergency Bulb provides cool day white light at 6500K for clear and comfortable visibility. It is equipped with a built-in Li-ion battery offering up to 4 hours of battery backup during outages. The inverter function automatically switches the bulb to emergency mode when power fails. Its shatter-resistant construction enhances durability and safety in everyday use. Over-charging protection helps safeguard the battery and extend its lifespan. Featuring a standard B22 base, it allows easy installation in regular bulb holders.