DC23 Canister Vacuum Cleaner- Refurbished, Iron/Purple Level 3 Root Cyclone technology, the most efficient cyclone technology for capturing microscopic dust Air-driven brush bar spins up to 90 times per second. Ideal for cleaning medium and short pile carpets- can be turned off for hard floors and delicate carpets Sits on stairs, designed to sit on stairs while you vacuuming No extra costs, Lifetime HEPA filter and no bags to buy 10 month warranty, parts and labor guaranteed by Dyson for 6 months Level 3 Root Cyclone technology, the most efficient cyclone technology for capturing microscopic dust Air-driven brush bar spins up to 90 times per second. Ideal for cleaning medium and short pile carpets- can be turned off for hard floors and delicate carpets Sits on stairs, designed to sit on stairs while you vacuuming No extra costs, Lifetime HEPA filter and no bags to buy 10 month warranty, parts and labor guaranteed by Dyson for 6 months