Small desk air purifier with the following features: - Works with a high-efficiency HEPA filter to remove dust, smoke, and odors. - Contains: - Two operating speeds (low, high). - Operates quietly (noise level as low as 20 dB), making it suitable for bedrooms and offices. - Equipped with a top opening for adding essential oils to freshen the air while purifying it. - Works via USB connection, allowing it to be powered by a computer or power banks.