Features: DIY front wheel e-bike conversion kit for bicycle with a700x23c wheel. Powered by a 36V / 3200mAh rechargeable Li-ion battery, operate with little noise and have a long lifespan. A micro USB charging port in battery enables you to charge your devices while you ride. Dual model controller (26km/h speed @ 20-25km range 30km/h speed @ 30-50km range) guarantees you can ride your motorized bike even when the signal source (Hall) is disabled. Specification: Material: Aluminum alloy Plug: EU / US / UK (Optional) Motor