An easy to use touch panel with a cool blue back light allows for simple configuration of air speed, timer and sleep mode. This is an ideal gift for people with allergies, stuffy noses, coughs, sneezing etc. The perfect gift for babies, families, the elderly, animal lovers, friends and colleagues. The pleasantly clean air in your room will help you sleep better and sleep better. True HEPA Technology removes up to 99.97% of airborne particles and allergens including bacteria, viruses, dust mites, pollen, smoke, mould and pet allergens Room area purified: 40m². Press Sleep Mode to turn off all the lights except the slight illumination of the Sleep Mode button. Touching the Sleep Mode button again it will illuminate the functions in use. When in sleep mode, this air purifier would not disturb you and let you breathe clean fresher air while you are sleeping, reading or working.