Hand crank charges internal rechargeable batteries. Comes with cable to charge Nokia type phone Controls: Button for loud emergency alarm siren, Slide switch to turn on one or three LEDs, FM radio scan button, FM scan reset button, FM radio volume dial Connections: 5V phone charger plug, and 1/8" earplug connection. FM Scan type radio, will also pick up some TV audio, output in form of speaker or ear plug(not included) The front of the light contains three 5mm LEDs behind a trio of focusing lenses, one for each LED. Behind the lens system are the three LEDs, each in a silvered plastic reflector to help focus the light forward. One or three LEDs can be selected with the switch.