Twenty sealed ball bearings throughout the frame and pivot points to provide a smooth and durable feel. Unlimited resistance for upper and lower body extremities based on air resistance to get a complete cross-fit workout. Computer features motivational programs providing many programs (tabata, intervals, watts, heart rate) to accomplish your fitness goals. Twenty five inch diameter steel fan delivers maximum resistance, with six way adjustable seat fore and aft, up and down and tilt. Set a calorie, distance or time target goal with advanced computer display.