The P400 Air Purifier gives you highly efficient air purification at home. Insert the filter that meets your needs: ALLERGY (included), BABY or SMOG. Whether at home or at the office, the P400 will blend in effortlessly with your everyday surroundings – its quiet operation will never distract you. Enjoy fresh mountain air in every room. The P400 comes standard with the ALLERGY filter. The BABY and SMOG filters are sold separately. An Air Purifier filters out ultrafine particles, thus providing clean and healthy room air. With our special filter package (HEPA and active carbon filters), BONECO purifiers are capable of removing allergens, pollen, bacteria, dust, pet dander, dust mites, smoke and odors from the air. Our filter systems remove 99.79% of particles over 0.05 micrometers. Additional features: 5 fan level speeds, whisper-quiet operation, low power consumption (DC motor), filter change reminder, container for use of fragrances, and 5 year warranty.