Shimano Alfine S701 Dynamo Hub

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.