Four different sources of power are available so that you are never without a radio or flashlight. Great for outdoor activities or as a standby light at home. You can charge the integral battery with the sun or indoor light or use the dynamo crank. This unit also runs from 2 AA alkaline batteries or a 4V power jack. The radio features AM/FM bands with adjustable volume and LED lights to indicate reception. An earphone jack is also included. The flashlight comes with a clear lens for normal use, a red lens for night or warning use and a yellow lens for warning use. A switch flips the flashlight from a steady beam to a flashing warning light. Two replacement bulbs are included. AA batteries sold separately.