Shimano Alfine S701 Dynamo Hub
Tired of recharging batteries? Why use a plug when you can use your legs? The Shimano Alfine S701 dynamo hub is a front wheel hub that has the ability to power a front light or other dynamo-powered bike appliance. Simply pedal, and the dynamo hub uses a magnetic interaction to generate electricity. It can generate up to 1.5W (6 volt) of power, with a built-in overvoltage protector, that can generate compatible LED lights, USB chargers and other devices. It also comes ready for Centerlock disc brakes.
This is a hub only.