It stopped working after a few weeks, repairs didnt help, and when I returned it, Dreame refused to refund me. Their advanced support takes forever and gives no real answers. They essentially stole from me by keeping both my money and the vacuum. Dont get scammed the same way. https://www.reddit.com/r/RobotVacuums/comments/1mwk34p/dreame_is_a_scam/