Sundigits 3-in-1 Power Failure Light uses advanced LED technology to give soft lighting as a night light with an automatic dimmer control that adjusts for roomlight/darkness, super bright lighting as a Power Failure Light, and can be removed from the outlet as a flashlight with an on/off switch. Single full charge stores enough energy in the Lithium Ion battery for a four night/30 hour use. 2 year Warranty. UL and RoHS compliant.