The construction work easily and quickly. On the whole, the thing also makes what it is. One can nicely hinstrampeln over and watch television. The disadvantage is that the thing frequently are strange knocks by itself. With each revolution, or so we hear a metallic click sound, no idea where it comes from. The saddle is zeimlich uncomfortable and the longer kicking leg falls asleep a (something squeezed?). Anyway, helps as a cushion. And the battery compartment can not be closed, at least not when batteries are in there.