Introducing the Dynamo 4-in-1 Flashlight with 3 bright LEDs, AM/FM Radio, Emergency Siren& Cell Phone Charger. The high efficiency dynamo system allows one minute of winding to create enough power for 1 LED to last an hour and a half or 3 LEDs to last for 30 minutes. Winding for 3 minutes will give your cell phone 2-8 minutes of talk time. This is a Great tool for every home, automobile, boat, office, and school.
Never needs batteries!