Smart Voice & App Control: Supports WiFi or Bluetooth connection, so you can control the air purifier from anywhere via Govee Home App. Use your voice to activate pure air with Alexa, Siri, Google Assistant and IFTTT.Replacement filters can be purchased on Amazon by searching " Air-Purifier Replacement Accessories for H7122". Large Coverage Area: H7122 air purifier has a 240 CFM and 360° of airflow to purify large indoor rooms up to 1837 ft² every 60 minutes. It's a easy solution for whole home, and ensures clean and fresh air for you and your family. Sensitive Auto Mode: Smart air purifier has an integrated professional PM2.5 sensor, allowing purification levels to automatically adjust in Auto Mode based on the surrounding real-time air quality, with an LED indicator light so you're always kept informed. H13 True HEPA Filtration: Now upgraded with a washable pre-filter for enhanced odor and harmful gas control! The effective true 3-Stage Filtration System traps airborne particles as small as 0.1 microns, relieving sneezing, congestion, and other symptoms. Create Schedules: Customize your own purifier start and end schedules, along with specific fan speed and Auto/Sleep mode time periods, for easy convenience during both the day and night. Refresh Your Health With Govee Smart Air Purifier. Our goal has and always will be to Make Life Smarter.