iRobot Mirra 530 Pool Cleaning Robot Pool-cleaning robot deep cleans pool surfaces and water PVC scrubbing brush removes leaves, hair, dirt, algae, and bacteria from pool floor and walls 2 powerful motors--1 to drive the robot and 1 to pump and filter 70 gallons of water per minute PVA wheels for sponge-like traction; dual top-load filter canisters for easy access and debris removal Measures 16 by 13.8 by 12.1 inches