This device serves all of your needs in one little unit. It can be powered two different ways: by the solar panels at the top or by hand cranking the lever, which works great on cloudy days. It has four distinct functions. You can use it as an LED Flashlight, an AM/FM radio, as a charger for your cell phone or as a high sound alarm/siren. It is the ultimate gadget for all of your needs in a pinch. Your friends will think you're go go gadget-liscious.