[. . . ] [. . . ] Steel frame Aluminum frame 250 W brushless motor Internal 3-speed 0 to 6. 2 MPH: assist ratio up to 1:2 6. 2 MPH to 14. 9 MPH: assist gradually reduced to zero Lithium-ion battery 25. 2 V 5. 7Ah (rated Value) Approx. Front: V-brake Rear: Roller brake 3-head white high-intensity LED battery-operated light Handlebar panel switch (with auto power-off function) CY-SPH600NA CY-SPA600NA [. . . ] [. . . ]