The Monark 939E was developed for aerobic and work tests, and is ideal for customers who wants to save and analyse data easily. This model has a unique breaking system which can be controlled before, during and after the test. The bike is speed independent, which means that you can pedal with different frequency maintaining constant power outpout. Easy to connect to different digital systems, can also be controlled analogues. Endless possibilities to use different load types and create your own protocols and perform data analysis via PC program.