Bissell Rewind SmartClean Bagless Upright Vacuum, 58F8 SmartClean System: A clean carpet sensor and clean filter indicator make this a smart choice in cleaning Automatic Cord Rewind- 25 ft. power cord: With just the push of the button, the cord gets stored away Exclusive Helix System captures dirt and debris for even greater performance Clean Carpet Sensor: Changes from red to green when your carpet is clean Multi-Level filtration reduces household allergens