52V 20AH High-Spec Version: 1000W rated motor, 1500W peak output. Motor Power1000W Rated / 1500W Peak. 5-level adjustable pedal assist mode. FeaturesAdjustable Seat, Lithium Ion Battery, Pedal Assist, Rear Bike Rack, Fenders, Front Light, Display, Kickstand, Reflectors, Fat tires.