Freway 27 Speed Pedal-assist Smart Lithium Battery Electric Motor Mountain Bicycle Innovative Freway vigor system consists of three parts, the touch panel, battery pack and smart controller Shimano speed control system, Freway uses the shimano 27-speed controller set, you can cycle in any speed on the road 27.5 inch bike rim, light weighted & high strength alloy frame, shake absorbing front fork High quality motor, ebike pedal assist helps make the climb much easier, switch from 3 cycling modes base on different riding conditions Smart data delivery, the smart touch panel can calculate and record all necessary cycling data for you