Balance Of : This mini exercise bike is designed for exercise arms and legs, providing smooth, low-impact top exercise and lower body stimulation for blood circulation and muscle improvement Strength and coordination; help improve overall shape. Multi functional exerciser:It can be used as arm exerciser and leg exerciser.Place it on your lap or a desk/table in front of you,training for the hand joints. Multi gears speed:Motorized pedal action with multi speed settings for picking the perfect pace to reach your goals. design:If the leg have severe , the machine will automatically stop working to protect the user. Forward and reverse rotation: The dual axis supports forward and reverse rotation, and the effect is better when used together.