High-efficiency air purifier filters up to 99.97 percent pet hair, pollen, dust, TVOC etc. with a particle size of up to 0.3 microns with optional iOS/Android app connection and Google Assistant/Alexa voice control Ideal for rooms of up to 60 m²: PCADR 500 m³/h, FCADR 185 m³/h, filters up to 165 m² in one hour with ion negative generator for even better air well-being like in the forest or near a waterfall High-precision PM 2.5 and PM 10 sensors for detecting air pollutants and for automatic power regulation in auto mode Whisper-quiet operation with a noise level of only 33.7 dB in sleep mode and max. 63 dB in high mode OLED touch screen for controlling and displaying air quality in real time and filter change reminder (6-12 months)