The Stamina X AMRAP Rower is built to withstand intense workouts day after day. Dynamic air resistance adapts to your workout speed. Pull harder for more resistance; ease off for less. Further customize your workout by using the adjustable damper.Track your gains over time with the workout monitor and chest strap heart rate transmitter. The monitor allows varied workouts each session, increasing your motivation and interest. You can pick interval intensity programs or set target values for distance, time or calories. During your session, the monitor displays distance and interval, time, total strokes/strokes per minute, meters per stroke, watts, calories and heart rate (by using the heart rate transmitter). A game mode adds even more fun and variability. Also, a cell phone bracket allows use of your own device during your workout.