3-in-1 Emergency Light Lithium Ion battery stores 4 nights (30 hours) of power on full charge. UL and R0HS compliant. Night Light, with soft, dim lighting for any room Power Failure Light, ensures bright light for safety during power failure. Flashlight, can be removed from outlet and act as a flashlight. Sensor on/off control with automatic dimmer. On at dusk, off at dawn. Six energy efficient LED's conserve energy. UL and R0HS compliant.