The PRO is 23% faster than the Original LegXercise 72 Steps per Min 4200 Steps per Hour 2.7 KM worth of steps per hour Faster and more Powerful Motor Power Supply 750mA Increased Range of Motion, which means More Movement A Step Counter to keep track of what you've Accomplished And the Comfort Remote Control LegXercise PRO is the easy-to-use, automatic leg mover that uses continuous movement to soothe pain and promote healthy circulation the natural drug-free way! It's patented Walking Simulator Propulsion Technology moves your feet back and forth along its concave track creating constant movement and flex at BOTH the KNEE AND ANKLE JOINTS, the perfect combination to soothe pain discomfort and help stimulate healthy circulation. It's like having a physical therapist right in your own home! LegXercise PRO is the Natural, Drug free way to Soothe pain and discomfort Reduce swelling in your legs, ankles feet and Stimulate Healthy blood flow