Electric fireplaces vary considerably in terms of how realistic the flame looks. The LED lights will be illuminated in varying patterns, which will simulate the flickering of an actual flame. Some products use very simple patterns. However, many others use a much more complex pattern, and these patterns will include more variations. This will allow the lights to simulate a genuine fire far more accurately. Not only that, but many electric fireplaces feature a background of lights. These lights will remain on any time the fireplace is on. As a result, the general outline of the flame will remain on all the time, which will add to the realism even more. Furthermore, many of these products will feature a hazy background screen. This effectively simulates the appearance of real smoke. Some products even offer oscillating patterns of lighting on this hazy background screen, which can enhance the realism of the flame even more. Also, many products use oscillating patterns on the log set at the bottom of the simulated flame, which can look just like simmering embers in an actual fire. MagikFlame's HoloFlame technology makes logs look like they are wrapped in fire.