Mops floors by 4 steps : Sprays the hard floor with clean water to soften stains, scrubs the hard floor with a microfiber roller, vacuums dirty water with superior suction power and wipes off residues with a rubber scraper, leaving the hard floors spotless and dry within 1 minute. 【MULTIPLE CLEANING MODE】: 4 different cleaning mode: PATH, AREA, SPOT, EDGE for handling multiple room. Maximum cleaning area will be 600 sq.ft 【Clean/Dirty Water Separation】: Clean water and dirt water are stocked into separate water tanks. Always mops floors with clean water and dirty water collected from the floor goes into its individual reservoir for easy disposal. Capability for clean water 0.8L, dirt water 0.9L. SUITABLE FOR HARD FLOORS ONLY】: The Shinebot W400s is suitable for hard floors only, like tile, marble, hardwood or laminate. Below floor tiles are not suitable: tiles with large gaps, uneven floor tiles, the height difference between tiles is over 3 mm that the shinebot cannot cross it. EUC Only used a few times. will include replacement brush head. Works great!