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://45listing.com/story21463193/os-princ%C3%ADpios-b%C3%A1sicos-de-automatic-vacuum-cleaners