Magnetic tension system with 16 levels of adjustable resistance, simulating various surfing experience for different levels of users. Designed with professional rowing athletes' preferred arm and hand position, ergonomic handle ensures you keep a right posture during exercise to prevent injuries. 11 lbs of quiet magnetic flywheel. Non-maintenance, long serving life and uniform resistance. Magnets are assembled besides the flywheel, allowing magnetic rowing machine to adjust resistance per distance between magnets and flywheel. Folding compact design for modern family. Sturdy aluminum slide rail. Max user weight of 265 lbs. Ultra quiet design (Operating noise <30db). Fitness monitor keeps you motivated by tracking time, count, distance, calories. Caster wheels allow you to roll the machine into position so you can enjoy fitness anywhere you want.