HEATDAZ small air purifiers for smokers uses an advanced 3-Stage filtration system.Create a comfortable atmosphere for work, study, or daily life. This air purifiers for dust is user friendly, which through a simple one-button operation can switch between three speeds and timer mode. This air purifier for bedroom adopts 360 air intake to purify every corner of the room in all directions, covering a range of 108 ft2, perfect for bedrooms, dorms, offices, baby rooms, kitchens, living room, home offices, etc. The compact and portable design of this wildfire smoke air purifier can be used anywhere, allowing you to enjoy fresh air all the time