The two main functions of this survival tool are the LED flashlight and the AM/FM/NOAA Weather Radio. With three white bulbs, the LED flashlight is fairly bright and can run up to nine hours on a fully charged battery. At peak charge, the light is approximately 40 lumens. For each minute of hand cranking with the built in crank, you’ll get about three minutes of flashlight run time. The bulbs are rated to last 10,000 hours. The radio works well, and is adjustable by .1 increments. You can dial in the weather band frequencies between 162.400 and 162.550, or set the tool to activate when NOAA weather alerts are detected.