Adjustable Professional Exercise Bike for Home and Gym UseQuiet Belt Driven Mechanism with Tension Adjust Knob: The belt driven mechanism ensures smooth and quiet workout. And the ultra quiet flywheel produces little noise. You needn't to worry that the noise would bother your family while doing exercise. And there is a tension knob that can adjust your exercise tension for your different exercise intensity. Adjustable Seat and Handle: The height of the seat and handle is adjustable, which can fit to various