【Travel-Size True Hepa Air Filtration System】 This portable air purifier cleans the air at CARD 161ft²/h, allowing you to breathe fresher and relieve allergies, sinus problems, colds, nasal swelling, and more. 【3-Layer Air Filter】Homintell car air purifier is equipped with a 3-layer air filter, including a pre-filter, HEPA filter and activated carbon filter to remove 99.97% of air pollutants such as dust, pollen, pet dander and smoke. 【Built-in Aroma Bottle】Add your favorite essential oil into the aromatherapy bottle to effectively and quickly remove odors and enjoy fresh air quality in advance. 【Powerful 3-Stage Purification】3 wind speed modes up to 5500 RPM to keep the air fresh wherever you go. Clean Air Delivery Rate (CADR) of 161ft²/h. Ideal mini air purifiers for smokers. 【24/7 Service & 1-Year Warranty】We stand behind our products and an extra 1-year **registration is available in the user manual. Please feel free to contact us and the after-sales service team is always with you.