High Efficiency Air Purifier: Air purifier is equipped with H13 grade HEPA filter element, which can effectively remove 99.97% of particles as small as 0.3 microns in the air to achieve high efficiency purification. The built-in negative ion generator can effectively remove smoke and dust. Portable And Convenient Hepa Filter: The air filter is compact and compact, measuring about 6.8x6.8x13.3cm. 360 degree air intake, fast clean air circulation, equipped with a data cable, easy to use and carry out, let the fresh air around you all the time. Unique And Romantic Air Purifier: purifier has a romantic starry atmosphere light, which allows you to have a comfortable and romantic atmosphere while purifying the air, which is conducive to relaxing emotions and creation of an ideal indoor sleeping environment. Easy to Use & Healthy & Environmentally Friendly: Sleep HEPA Air Purifier is removable, simple and convenient, with aromatherapy box built-in and aromatherapy cotton, DIY adding essential oils, long service life, environmental protection and health.It only takes one hour to purify and filter 50-100 square feet of indoor air, suitable for rooms from 5 to 15 square meters. Universal Air Purifier: Negative ions provide effective filtration high efficiency air ventilation and are very versatile and can be used in children's rooms, pet rooms, living rooms, home offices, bedrooms, etc. It is also the best gift for relatives and friends.