The resistance comes from permanent magnetic field and the mechanical design. When you are pedaling, the magnets attract the wheel thus create the magnetic resistance. The level of resistance is controlled by adjusting the distance between the wheel and the magnets via a 8-level manual tension controller.
*No need of external power supply
*Non-friction system, ultra smooth and quiet
*8-levels of resistance controlled by tension controller
*Computer function:(LCD display)
Time/distance/speed/calories/pulse(optional)

CARTON SIZE:L680xW300xH560(MM)
N.W:24KGS
G.W:27KGS
CUFT:4.03'
Q'TY/20FT:240PCS
Q'TY/40FT:508PCS