Philips 20W Emergency LED Bulb provides bright crystal white light suitable for both regular and emergency use. It features an inbuilt rechargeable battery that offers up to 3 hours of backup during power outages. The bulb automatically switches to emergency mode when the main power supply fails. Its energy-efficient LED technology delivers high brightness while conserving electricity. Equipped with a standard B22d base, it allows easy and quick installation in existing fixtures. Ideal for homes and workplaces, it ensures dependable lighting during unexpected power cuts.