With my eyes, the LED is just bright enough to see a shadow of something small flopping around at about 25yds. It isn't really bright enough to see any color of the decoy and the direction of the bulb pretty much prevents lighting up the base unit since it is pointed straight up. I'm sure the predators can see it better than me though. It's not as bright as those cheesy light up keychains you get free from time to time. I had foxes charge right up to the Foxpro J-I-B and a coyote almost slide through my FoxJack the first time I used it. Not sure if it helps or not, but haven't seen it hurt yet, so I keep running mine. It is also nice to have a slight visual on your call without having to light it up with a scan light.