This is a single filament LED night light bulb. It is the recently introduced "filament" type LED. This bulb very much like an incandescent bulb, with a tall filament inside the bulb that emits light along its entire length. We had these specially made for us to have the same "warm white" 2700 degrees K. color temperature as an incandescent bulb. It does not have that harsh bluish green light that many LED's have, so it looks really nice with our night lights! The light output is approx. 45 lumens, so about the same as a 7 watt incandescent bulb. It runs much cooler, and at .7 watts, it uses 1/10 the power of a regular bulb. It is rated at 15,000 hours, or ten times the lifespan of an incadescent bulb!