LED Rechargeable Emergency Light/Energy Saver Bulb-PIN With Two Free Batteries

LED Rechargeable Emergency Light/Energy Saver Bulb can do what three regular energy saver bulbs will do. It incorporates emergency functions, with energy-savingfunctions and environmentally-friendly LED functions. When regular power supply goes off, this LED light bulb goes on automatically, being powered by the internal battery of the lamp. It may illuminate the surrounding for close to four hours when fully charged.

As a common bulb, when there is regular electricity supply, it lights up, while charging at the same time. As an emergency bulb, its intelligent emergency and charging circuit turns on automatically, switching to emergency lighting within one second.  You are guaranteed 2.5 hours to 4 hours of high lumen visibility, depending on how long the bulb was charged. This solves the inconvenience caused by power outages.