Lumenstars G85 Emergency bulb is a unique emergency bulb that can be used in a variety of applications. It runs on 120V AC and has 85 high quality LEDs. 60 of the LEDs are on all the time, while the other 25 are strictly for power failure situations and only come on when the power is out. The E26G+E bulb can be used for pot lights, recessed downlights or anywhere that may need light in a power failure situation. It comes standard with an E26 medium base, uses only 7W of electricity, and has dimensions 2.76 x H3.62in to fit into most standard size pot lights and fixtures.