Smooth Fitness CE-7.4 Elliptical Trainer 21-inch stride length is comfortable for multiple users of varying heights Ergonomic, pivoting foot pedals emulate the natural motion of your ankle as the pivoting foot pedal maintains proper alignment Wireless heart rate monitor is included; automatically adjust the intensity of your workouts to reach your optimal fat burning zone Deluxe four-window, dot matrix LED display allows you to easily read course profiles and track your RPM, speed, watts, time, distance, pulse, heart rate, calories, resistance level, metabolic equivalents, and target heart rate while working out Warranty information: lifetime on the frame and braking system; three years on all other parts; one year on labor