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This sells for $169 from Amazon directly
Convertible vacuuming & mopping: DEEBOT 661 has an interchangeable dustbin for vacuuming and water tank for mopping; Swap between the two to tackle all your floor cleaning needs
Optimized navigation: DEEBOT 661 systematically navigates on hard floors for the perfect mopping
Up to 110 minute runtime: A longer battery life for even more cleaning auto return & charging means your robot will always be ready to clean
Max mode power: Increase suction power by upto 2X for particularly troublesome messes
Basic features: Includes anti drop & anti collision sensors, auto return charging, automatic software update, durable protective bumpers, high efficiency filter, anti scratch finish, a large easy to empty dustbin, large wheels for climbing thresholds, etc