The air purifier comes with a filter EFFICIENT H13 PURIFICATION: The air purifier has a powerful filtration system that can remove particles as small as 0.3 microns, including dust and pollen. It can cover up to 1295 sq ft / 120.3 m² and refresh the air in a room every hour SMART AIR PURIFIER: This air purifier has a real-time air quality indicator that shifts from green to yellow or red, automatically adjusting the fan speed. Green means good air quality (low speed), yellow indicates moderate (medium speed), and red signals poor air quality (high speed) ULTIMATE SLEEPING EXPERIENCE: You can choose a low fan speed or the automatic mode according to your preference while sleeping. The lights can be turned off, and the machine runs quietly, ensuring that your beautiful dreams are not disturbed TIMER FUNCTION AND CYCLE TIMER FUNCTION: This product features timer settings for 2, 4, 6, and 8 hours.