500W rear mounted brushless motor 27.5'' electric bike

*transmission：Shimano 21 speed *Battery：48V 13AH  lithium battery *Motor Power：500W 48V high-speed brushless motor *frame：27.5'' *tire：27.5×2.1 *Max Speed: 35km/h-40km/h *Riding Distance without Assistance:30-40KM *Riding Distance with Assistance:40-50KM *Power Assistance Level:5levels *Charging time:4-6 hours *Brake type:  Mechanical disc brake *Material: Aluminum alloy material *Bike Weight: 26KG *Packaging Weight:32.2KG *Maximum Load:150KG We have also prepared some gifts to facilitate your use of this bicycle. We want to make riding become easily.