Beurer LR330 Comfort Air Purifier ensures clean air. It is 2-in-1 comfort air purifier: air cleaning and air humidification rolled into one. Air humidification is by self-regulating cold evaporation. Cold evaporation provides additional air humidification. This helps you feel comfortable at all times. Air cleaning is by using a three-layered filter system (prefilter + activated carbon filter + EPA filter). The purifier comes with current ambient air humidity display and enables setting the required air humidity (40-80%).