Exclusive Magnetic MUTE System】Recumbent exercise bike equipped with 28 lbs flywheel and an exclusive and cutting-edge magnetic resistance system, which provides 14 levels of smooth magnetic resistance options by adjustable tension knob for an easier or more difficult workout, ensuring that every pedal stroke is whisper-quiet and effortlessly smooth. No more distractions – just pure focus on your fitness goals. Virtually no maintenance is required.