DuoClean Detect: Two brush rollers and multiple sensors adjust for optimal performance. DirectionDetect: Designed to clean both forwards and backwards for faster and more efficient results. DirtDetect: Automatically detects dirt and increases cleaning performance EdgeDetect: Detects corners and edges and increases suction power FloorDetect: Detects floor type and adjusts brush roll speed and suction power The powerful, intelligent, deep-cleaning cordless vacuum that automatically charges and empties after each cleaning - dirt and grime is trapped for weeks.