【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 6.4x6.4x13.9cm. 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