describe:1. 3-stage air filtration, equipped with fine primary filter, true HEPA 13 filter and activated carbon filter, Aura provides up to 99.5% air purification rate and high concentration of negative ions, ensuring that the surrounding air is always pure and clean. It effectively removes bad odors, pollen, mold, germs, bacteria, pet skin, dust and smoke2. Its smart air quality sensor and indicator displays the air quality with the help of LED lights inside the purifier. A red light indicates poor air quality, a blue light indicates average air quality, and a green light indicates good air quality. When the Aura air purifier is turned on, the LED light will glow red, blue, or green, depending on the amount of air pollutants in the surrounding air.3. We use cup holder size design to fit almost every car. Powering the Aura with a Type-C connector, it comes with a fast-charging USB port that helps you quickly charge any other device through the air purifier. Filter life is up to 6 months, and genuine replacement filters are always available for repair.4. Real-time monitoring of air quality sensor, highly sensitive sensor, monitoring air quality throughout the entire process and automatically switching operating modes5. One-year warranty from the date of purchase. If you have any questions about our products, please contact our customer service staff via our email. Our friendly customer service team is ready to enhance your product experience and replace your product immediately, no questions asked whether the product is faulty or underperforming.Specification:Product name: Air purifierProduct size: 3*3*6.7 inches (74*74*171mm)Weight: 240gPackage includes:1 x air purifier1 x filter element