Hoover Air Cordless Series Bagless Upright Vacuum Cleaner, BH50140 / BH50121 LithiumLife Battery Technology - 50 minutes of cordless fade-free battery power for whole-home cleaning WindTunnel 3 Technology - three channels of suction to lift and remove deep-down, embedded dirt Lightweight and Steerable Technology - weighs less than 10 lbs allowing you to clean around furniture with ease Multi-Floor Cleaning - easily clean from carpet to hard floors. Cleaning Path-11 In , enough to clean a 2,500 square foot home! Reusable Easy Rinse Filter - rinse the filter to maintain the power to clean