ECOVACS DEEBOT 661 is a convertible robot vacuum with an interchangeable dustbin and mopping tank to tackle all your floor cleaning needs. Includes an interchangeable dustbin for vacuuming and a water tank for mopping; swap between the two to tackle all your floor cleaning needs. Follows a systematic, back-and-forth cleaning pattern in Hard Floor (mopping) mode. The thorough and efficient cleaning path prevents missed or repeated areas. Max mode provides 2X suction power for removing stubborn dirt. Runs longer for uninterrupted cleaning – up to 200 minutes of mopping, or 110 minutes of vacuuming on a single charge. Automatically returns to the charging dock when cleaning is complete or when the battery is low. App control schedule a cleaning or start cleaning from anywhere, even when you’re not at home. Smart home compatible control your DEEBOT using only your voice with Google Assistant or Amazon Alexa.