Hi there, this is Krystal with Dyson. Thank you for your interest in the Dyson Cinetic Big Ball. This vacuum uses our latest cyclone technology which is the Cinetic cyclone technology. It is more efficient than previous models in that the cyclone tips oscillate at up to 5,000 Hz, separating the microscopic dust that clogs most vacuums. This new technology requires no filter maintenance as well.
Dyson Customer Service