Easy assembly. On this side, really RAS. For cons, I just use it the equivalent of approximately 3 hours continuous 1/4 hour each day. Outside it starts to whine loud and rhythmically on each other at the pedals. David Douillet did not test it ...... I'm 90kg and have not exercised for 20 years. Needless to say, the machine is not really shaken! I already dread and already aging of the device.