1.Power comes from you riding 2.Bright LED with dual lighting 5 LEDs to conserve battry life 9 LEDs to light for max power 3.Dynamo Power Station for Multifunction AC output with optional 110V/230V DC output with optional 3V/4.5V/6V/9V/12V Optional USB/DC/AC for most of rechargeable products 4.Charge most mobile phones, iPod, MP3, MP4, Digital Cameral, PDA,Laptop and other rechargeable products