Designed for the commercial setting, the X6600HRT uses its extra-heavy gauge steel frame and top quality components to withstand hours of use and abuse. The Easy-8™ console features four Heart Rate Training(HRT) programs and a seperate heart rate feedback window for optimal training as well as five custom programs. Our Cambridge Motor Works™ generator system and Bio-Radius™ pedal arms help to assure a smooth and quiet ride, making the X6600HRT the perfect elliptical trainer for a commercial setting or the ultimate elliptical trainer for your home.