This class-A rated ergometer is electronically calibrated so you can accurately measure the amount of effort you are using. It's built with high quality components and unprecedented attention to detail, just take a look at the 'rapid adjust' seat height mechanism and ratchet style pedal straps. A target heart rate program means you can direct your workout to specific areas, whether that is burning fat or improving aerobic capacity, and using the wireless heart rate receiver gives even greater levels of heart rate accuracy.