BELT DRIVEN & 6 KG FLYWHEEL:Belt driven system makes your workout smooth and quiet. The heavy-duty flywheel ensures stability and also offers more power for a more challenging exercise. SOLID BODY AND UNIQUE DESIGN:The heavy-duty strong frame gives more durability and can stand more frequent exercise than regular home use bikes. The design is distinct to combine fashion with practicability perfectly. TRACK YOUR FITNESS:The digital monitor of indoor cycling bike will monitor and record in real time the training time, speed, distance, calories , so that you can know your progress and adjust your training plan in time.