[Adjustable Stages] Set 3 fan stages, the speed corresponds to 3000RPM/4500RPM/5500RPM respectively, according to different scenarios set up, more flexible;
[Extra Long Standby Time] 1-stage standby time ≥24 hours; 2-stage standby time 15±2 hours; 3-stage standby time ≥8 hours, fully charged in only 1.5 hours;
[Low Decibel Operation] The noise generated by the air purifier operation ≤ 45dB, will not affect others resting, studying or working. Quiet operation, concentration and air purification.