Black & Decker PSV1800 18-Volt Cordless Pivoting Floor Vacuum Cleaner  it have more power than some of the most expensive cord cleaner . it be fun to vacuum , go on with a flip of the button under chair , furniture , and do not grab electric cord as most vacuum cleaner do but push they away gently when encounter . the battery be long lasting , more than enough to clean a complete floor of a big house . it be truly a 21st century vacuum cleaner by it be versatility , power and design . I recommend it to all my friend . buy it , you 'll love it .