Good and sturdy construction although it is the classic Chinese plastic.
The first step is very powerful, which someone may not like as it blows quite strongly for close distances.
Finally, it is quite noisy even on the first step, I don't think it disturbs too much during sleep, but it should be taken into consideration.
I had bought the same brand and size 12-13 years ago and it still works... just needs a little oil on the motor from time to time because it takes a while to start.