... , 2h, 4hRemote control, operation more easy.Three fan speed controls: low, middle, high.UV/TIO2 photocatalyst: Kills essentially all bacteria, ... and particulate sensor) detects air quality and adjust fan speed automatically, friendly design to supply convenient use.Negative ion: ... 60HzAir flow volume: 85 m³/h (low speed), 150 m³/h (middle speed), 180 m³/h (high speed)Atomization volume: 80ml/h (low) , ...