1,energy saving led lamp e27 2,led blub 4v. 3,long life >60000hours 4,high efficiency,energy saving. energy saving led lamp e27The ... convenient.Product characteristics:1. Lead-acid battery rechargeable and maintenance with 900mAH high capacity, can ... is in charge position, the indicator lights, LED lamps will light automatically if suddenly cut off. ... used for a long time. energy saving led lamp e27