... Wet and dry 3.Smart noise control, less than 50DB Intelligent robot vacuum cleaner 310B introductions: a. LCD screen, nice shape, ... .d. Extremely Low noise, Less than 50dbe. Intelligent Automatically Home/office Robot Vaccum Cleaner, Self-recharging, Self-checking of the ... Mopping cloth*2 Mopping holder*1 Housewife Helper Intelligent Automatically Smart Home/Office Robot Vaccum Cleaner-Busy Bee 310B