This is a two-mode light bulb. On the one hand, you can use it as an ordinary light bulb, controlled by wall lights. On the other hand, it can also be used as an emergency light bulb. The battery will be fully charged, charged for 2 hours, and can work for 2-4 hours.You don’t have to set it up. When the light bulb works, it will automatically charge. In this case, it works like an ordinary light bulb. When the power is off, the light bulb is still working and it works as an emergency light bulb.You can use it as a common light bulb in hotels, restaurants, guest rooms, offices, showrooms, shops, corridors, or as a portable light bulb for outdoor and camping after charging.*Allow 2-10 working days for delivery*
