Pyle is helping you save the environment with every pedal! The Pedal Power Wheel-Powered Energy Generator allows you to ‘Go Green’ and charge your device while riding your bike! Simply mount the energy-generating dynamo to your bicycle wheel and the built-in rechargeable battery creates and stores power with every rotation. The system fits virtually any size and style bike, old or new, and quickly attaches and detaches for portability. It works with all of your favorite devices -- iPhone, Android, Smartphones, MP3 Players, Tablets, etc. If you have the USB cable, you can charge it! Reduce, reuse and rethink about the environment with the Pyle Pedal Power! (Model: PBDNC10).