look a bit past the end of the flourescent bulbs right on the reflector for what looks like a hole in the reflector metal, look carefully and you'll see that it looks like clear plastic filling that hole, thats the LED, the LEDs I've seen in this hobby are of the round variety, around 3/16ths of an inch in diameter, thats pretty darn small, but for the tiny size they put out quite a bit of light.