When it spots something, it will slow down and do a more thorough cleaning. I also like Dreame’s option to vacuum first and then mop, which the Roborock doesn’t offer. The X40 also features an extending side brush arm to reach corners — like the Roborock S8 MaxV Ultra — https://bookmarkstown.com/story19673779/indicadores-sobre-automatic-vacuum-cleaners-voc%C3%AA-deve-saber