Now here is a smart lighting solution that does more than just brighten the area around you. Owing to an efficient battery backup, the bulb lights up in the event of a power cut keeping darkness at bay. This Emergency LED is a regular LED bulb with a built-in battery that will stay on for up to 4 hours when the power goes out. It can be used every day as a regular light bulb. During a power failure, it can be used as a regular light bulb, or remove it and use it as a flashlight to locate other emergency supplies. Product Features: â¢ Rechargeable Emergency LED Light Bulbâ¢ Support Up to 4 Hours Emergency Working Timeâ¢ Plug and Play, More Convenient Usingâ¢ Automatic Chargingâ¢ Emergency Switch After Electronic Power Offâ¢ Lighting for Up to 4 Hoursâ¢ Safe Material, PC Fire-retardant Materialâ¢ For Shopping Malls, Hotels, Hostels, Fire, Home, Channel, Outdoor Emergency Lightingâ¢ Comes on with electricity power or without electricity power operated through same on and off switch.â¢ With sharp brightness.