The exercise bike is made of a heavy-duty steel frame. You can adjust the resistance through the 8-level magneto resistance adjustment system to meet your exercise needs. Different from a traditional sprocket . the magnetic resistance exercise bike is stable . making the driving process quiet . and will not disturb your family and neighbors. The exercise bike is ergonomically designed . you can use the buttons to adjust the rotation angle and resistance according to your needs. The seat height is adjustable in 7-level (73-80 cm) and pedal straps are adjusted with 4 holes; equipped with a tension rope . used to train your arm muscles and upper body to achieve a balanced whole-body training.