The Carbon Pro Magnetic Elliptical Machine model SF-E3981 is an excellent rear drive system model for low impact cardiovascular exercise. The performance monitor allows you to track your personal time, distance, calorie, pulse, speed, and RPM. Great for users of all fitness levels and anyone needing recovery training after surgery or start an in-home calorie burning exercise routine. With 10 levels of magnetic resistance, you will be able to change up your workouts to help you reach your health fitness goals. Built to last, feel confident with 16 inches of strides on this durable machine with a 265 lb maximum user weight. This Carbon Pro Magnetic Elliptical Machine is a must-have for people who want a great value elliptical machine their homes.