Coway Mighty (AP-1512HH) is a 4 Stage Filtration System designed to capture and reduce 99. 97% of particles 0. 3 microns in the air. It features a pollution sensor, timer, filter lifetime indicator, fan speeds, timer, and filter replacement indicator. It has 77 W power consumption and quiet operation with noise levels ranging from 24.4 dB to 53. 8 dB.