Hello, before making this purchase I measured under my furniture, and when the romba arrived I tried it and it does not surprise goes under the sofa and other furniture in !!! So I resumed my place and I measured the Rombat 581 is 8 cms high, except that it has a "sensor" that exceeds in the front, it can not pass under furniture below 9.3 cms. So I'm disappointed and I feel they have been deceived. I do not judge these qualities Fct because I have not tried enough for that, but I warn prospective buyer that is not 8, but 9.3 cms it needs to go under furniture . PS: Amazon has taken what was to write on the manufacturer's website.