Dimensions： round：21cm, high:9cm
Control： 3 position, 2 speed switch
Power Consumption： 4.5 watts
Outflow： 360°
Filter Life: 3 months
Pre - Filter: Washable (12 months)
Optional V.O.C Canister: 12 months
HEPA Filter: 2 -5 Years

Generally speaking, the more air changes per hour (ACH) you can provide, the more effective a HEPA filter can be.1 ACH provides excellent air cleaning results (higher is recommended for people with sensitivities).
Remember: More HEPA is better than less, but some HEPA is better than nothing at all.