Air Purifier from Qubo Model Q 500 Turn everyday into a Good Air Day with Smart Air Purifiers Ever-increasing air pollution levels is a reality today that ordinary air purifiers aren't designed to effectively combat air quality efficiently. At Qubo, we re-imagined air purification for modern homes. With best-in-class 4-layer filtration that removes 99.9% pollutants & proprietary QSensAI Technology that tweaks performance to an ambient PM2.5 level, Qubo  Q500 Smart Air filtration system that works with Alexa and it will make every day a good air day in your home or office. Good for rooms of size  of 400-600 sq feet