The Freeplay Eyemax self-powered wind up radio has AM and FM wavelengths and a 0.5watt output. It is made of a rugged clear blue and features an emergency LED light in the end of the radio. There is a built in NiMh battery and a solar panel with trickle charge and a fully charged battery lasts 25 hours. When there is insufficient light available to harness solar power, a 30 second wind enables a playing time of 35 minutes.