oenbopo Emergency Automatic Power Failure Outage Rechargeable 13 LED Light lamp Bulb Plug In Built-in 700mAh rechargeable Lithium battery 13 white LED emitters 1 mode: normally on , 2 mode: when be charged with electricity, light off. when be charged without electricity, light on Comes with 110~240V US plug power adapter When the electricity stop, it can automatically open itself It can be use 5 hours, when it fully charge on time Emergency light can directly insert in AC socket