Tunturi R701 Air Rower is a well-designed machine that will provide many years of controlled environment rowing. With this rowing machine, you can control the intensity of your workout by the number of strokes you complete per minute. The faster you row, the more air resistance is built up which works against the flywheel fan mechanism. The pulling motion of the Tunturi Air Rower closely simulates the oar action of racing shells. Throughout your workout, the electronics module measures time, speed, distance, and calories burned.