3 stages filter system: 

PP filter to collect big dust particles and to prolong the lifetime of HEPA; 99.97% efficient HEPA to filter the floating particles as small as 0.3 microns and pollen with little wind resistance; Efficient activated carbon filter to eliminate the strange odor, to filter the methanal and TVOC.

Built-in ionizer to release negative ions; Concentration of negative ions:3x106ions/cm3.

Adjustable speed in high, medium, low levels.

Quietly operates throughout the night, and has a gentle night light.

Night light can be switching on of off.

Filter changed indicator.

Effective area: 12SQ
Voltage:100~240V 50/60HZ 
POWER: DC motor 30W  

Noise level: ≤40dB(A)