Guarantee Living, Enjoying Camping
In the condition of normal 110V/220V AC power system, the LED Smart Bulb works and being charged at the same time. When you are camping without AC power, or in case of power cut or power shortage, the LED Smart Bulb will work as portable Solar Camping Light or Emergency Bulb, with its built-in 3.7V/2600mAH Lithium battery which lasts as long as 6 hours. The LED Smart Bulb is rechargeable and supporting with multiple charging ways, including solar charging and USB charging.