ProdecoTech v3.6 Stride 500 36V 500W 8 Speed 16Ah Li Ion Electric Bicycle, Black Pearl Metallic Gloss, 26-Inch/One Size Step Thru Aluminum Frame Rear Direct Drive 36V 500W Motor Continental Town& Country Tire 26" X 2.1" Speed 20mph; Distance per hour 35-50 Miles Twist Throttle Control